Spookiest Place to Walk Your Dog in San Antonio

I’ve been on hundreds of adventurous walks around San Antonio, but have never been creeped out on the trails until today. I inadvertently found a spooky little gem just north of the San Antonio Zoo. The place is known as Headwaters Sanctuary, and it is apparently the only nature preserve in the heart of San Antonio.

The nature preserve has several unique features, but thus far I found it to be the spookiest place to walk my dog in San Antonio. Judging by the lack of Google reviews, as well as the lack of visitors on the trails, it’s probably safe to say you have not been here before. However, if you attend(ed) the University of the Incarnate Word, then you may be familiar with this place.

Dirty part of the creek at Headwaters Sanctuary, one of the spookiest places in San Antonio.
Olmos Creek at Headwaters Sanctuary

How to Get to Headwaters Sanctuary in San Antonio, TX

Address: 4503 Broadway St, San Antonio, TX 78209

Headwaters Sanctuary is located behind UIW, on its northwest side. At first I attempted to get to the sanctuary around the backside, but that was not possible. You must go through the university to reach the nature preserve. It is open to the public everyday from sunrise to sunset. However, the university requires parking permits on weekdays during the school year. Park at your own risk during this time.

I have been to Headwaters Sanctuary on two consecutive days because I missed a couple things on the first visit. The best method of entry is the US-281 north entrance ramp at Hildebrand Ave. Instead of merging onto US-281, take the first and only right turn you can make from the entrance ramp. There will be a UIW sign, as well as a sign that says, “do not back up”. Make two left turns from there and you will find many parking spaces behind the baseball field.

Parking Tip

Choose a parking space west of the baseball field to visit the nature trails at Headwaters Sanctuary. If your only interest is The Blue Hole, head northeast and park near the bridge.

Trail map at Headwaters Sanctuary, the spookiest place in San Antonio.
Headwaters Sanctuary Trail Map

The Creeps at Headwaters Sanctuary

Abbey (my dog) and I arrived at Headwaters Sanctuary late in the morning on the first visit. Yes, this nature preserve is dog friendly. After viewing the map on the board we decided to head left. Our adventure began with the Great Oak trail, and the first thing I noticed was mulch covering the trail. There would be no muddy feet on this journey!

As we entered the preserve I also noticed that someone hadn’t finished cleaning up. Piles and piles of dead branches flanked our way along the mulch trail. Even though it was a hot, sunny day in San Antonio, the southwest section of the woods seemed rather dark.

Spider webs on the ground in the spookiest place to hike in San Antonio.
Piles of dead branches along the trails

We continued along the Great Oak trail and I consistently noticed giant patches of spiderwebs along the ground. What kinds of spiders live here? Why are they placing their webs all over the ground? I suppose they are more interested in hopping and crawling insects rather than those which fly through the air.

Clearly there was no shortage of spiders inside the sanctuary. What would the spookiest place be without tons of spiders? Many of the webs contained a giant hole where its maker was probably residing. Don’t stick your nose in there, Abbey!

Spider webs in the dark, creepy woods.

She did not need to stick her nose inside the webs because she was much more interested in the scent up ahead. On the path an armadillo was lying belly-up surrounded by flies. It may have had a wound on its right side, but it was not missing any body parts. I quickly pulled Abbey away before she got too close.

We hurried along through the dark wooded area full of low-lying webs. Many trees appeared to be dead or dying. I felt as if I’d seen more dead things than living. This was definitely the spookiest place I have walked my dog. I officially had, “the creeps”.

Giant yellow and black spider at the nature preserve.
A spider along the trail at the sanctuary

Don’t Give Up

We did not turn back. We did not give up. Abbey and I marched through the Great Oak trail with determination. In my right hand I held Abbey’s leash, while I waved my left hand in front of my eyes. No one enjoys getting spiderwebs in the face.

In many places the brush was high and close enough for spiderwebs to block the path. A walking stick would surely have come in handy, but not for walking. The path began to brighten as we continued, and we transitioned from the Great Oak trail to the Heritage Loop.

A bridge on the spooky trail at Headwaters Sanctuary.
Very well-shaded trails

The Heritage Loop is a rockier trail which forms a circle around an open soccer field. Much of the loop can be seen from the parking area. The Heritage Loop also contains Stations of the Cross. These are painted art pieces which show the path of Jesus on the day of his crucifixion.

The faithful can sit on a bench opposite each station and contemplate the path. It seemed as though the stations had not been cleaned regularly. Set in wood housings, they also have been covered by nests of spiders and wasps.

One of the Station of the Cross at Headwaters Sanctuary.

The Great Oak trail had spit us out on the west side of the Heritage Loop, which is across from the parking area. From there we entered the circle of springs. This sounded absolutely refreshing! However, the circle was filled with rocks and bushes. There was no water of any kind.

A lone feather sat in the center of the rocky circle. What do you suppose that means? There were more than a handful of butterflies taking advantage of one flowery bush. I was excited to see life within the sanctuary. Abbey was excited to smell it.

Butterflies in the circle of springs.
Butterflies at Headwaters Sanctuary

Beware What You May Find

We exited the circle of springs the same way we had come. It was the only way after all. We continued heading east toward the parking area until we came across a sign which read, “Little Blue Hole”.

Intrigued by what we might find we followed the trail. We heard sounds in the woods to the right as we continued along the short and narrow path. Perhaps there are more living creatures than I originally thought?

A lone feather sits in the center of the circle of springs.
A feather in the circle of springs

To the left I saw an orange bucket lid on the ground with flags around it. Surely that wasn’t it. Just beyond that I spotted what appeared to be a fire pit to the left. We slowly moved toward it and began to hear a strange sound.

Abbey and I stopped next to the pit and stared in the direction of the sound. The sound is very hard to describe. It was sort of a cross between a “quack”, and a “meow”. We held our ground until there was movement in the nearby grass.

The Little Blue Hole at the spookiest place to hike in San Antonio.
The Little Blue Hole

Was it a bug? A rodent? Slowly it moved, the noise stopped, and it slithered away from us. It was some kind of talking snake! What kind of snake makes a peculiar noise like that!? I have never heard that noise before. Was it warning us?

We’ve walked hundreds of miles in San Antonio, and this was the first snake to cross our path. That’s probably hard to believe, but it’s true. In any event, the nearby sign assured us we had reached the Little Blue Hole. Apparently it was one of San Antonio’s springs. There was some dirty water in there, but it did not appear active. It was unspectacular, but that snake was pretty wild.

Better Luck Next Time

We departed from that point, but not before checking the map once again. It seemed I had missed a view of the Olmos Dam as well as a larger spring that fed the San Antonio River. Even though this had been the spookiest place to walk, I made my plans to return later on during the week.

Once again it was late morning and the sun was shining bright in the sky. This time we headed the opposite way and started at The Little Blue Hole. Everything was still the same, except the snake was nowhere to be seen. Unfortunately, I had failed to get a photo of that snake. It was hard to see in the tall grass and I had to keep Abbey back as a precaution.

What would the spookiest places be without blockades?
Sanctuary construction?

We headed straight for the Olmos Creek trail from there to see if we could get a look at the dam. The trails were still narrow and many trees appeared to be down for the count. Either they fell down, or someone was cutting them down (one area near the creek had been cleared entirely). Once again I held onto Abbey’s leash with one hand, while the other waved in front to clear out any webs.

Eventually the path ended and we had a good view of the side of a bridge which went over the creek. There was a bench to sit on, but the view was terrible. I also noticed a giant hole in the chainlink fence. Someone was coming, or going, through the fence for reasons unknown.

View of Olmos Dam from Headwaters Sanctuary.
The Olmos Dam from Headwaters Sanctuary

The Path Was Too Quiet

We continued along what you might call the outer loop, returning once again to the Great Oak trail. We nearly brushed up against a giant yellow and black spider along the outside of the trail. That would have been a bad day! The spider was currently preserving some food for later.

Was the Great Oak trail still one of the spookiest places? Yep. We did not see a single person on the trails during the first visit. I continued to wonder when we would see someone. Anyone. Does anyone even know this nature preserve is here?

Piles of brush and dead trees in the nature preserve at one of the spookiest places.

We went from the Great Oak trail to St. Brigid’s trail, which eventually led us to a bridge. Even the bridge looked creepy. What is it with this place? Spookiest place ever! We crossed the campus street and continued along the path until it ended.

The wooded path had turned into a sidewalk which led to university buildings. Abbey erupted with excitement because there were cats and squirrels out in this area. After she regained her composure we crossed a few parking lots and found the creek once again.

Creepy bridge at Headwaters Sanctuary in San Antonio.
Crossing the creepy bridge

To the right I saw a bright, lovely looking bridge. This was not creepy at all! Finally. This must be the way to the spring. We crossed the bridge and sure enough, I noticed a sign leading us to The Blue Hole. We walked along the sidewalk, which appeared to be outside of the sanctuary.

Finally we reached The Blue Hole. The water was crystal clear and actively flowing into the creek. The creek by the campus street was dirty and swamp-like, as you might expect the spookiest place to be. Here the water was pristine and looked good enough to drink.

The red bridge leading to The Blue Hole spring in San Antonio.
The bridge over the headwaters at UIW

Should You Visit Headwaters Sanctuary?

I’m not sure what the overall plan is for Headwaters Sanctuary, but it currently needs A LOT of work. We walked more than 10,000 steps in two visits to the sanctuary and saw just about everything there is to see. The trails are very short and somewhat spooky.

Perhaps more people need to know about the sanctuary? We never did see anyone else on the nature trails. Being directly behind the University, I would expect people to be walking the trails frequently.

The Blue Hole, crystal clear spring water.
The Blue Hole at Headwaters Sanctuary

I must admit, my eyes were surveying every direction expecting an army of spiders to appear on those trails. Luckily, that did not happen. If you are into wooded areas that look kind of creepy, then you will enjoy Headwaters Sanctuary.

If you would like to see crystal clear spring water that feeds the San Antonio River, you will find it (across the red bridge east of the trails). Once the trails are updated and the area is cleaned up, it should look pretty spectacular. Currently, it wins my vote for spookiest place to walk your dog in San Antonio.

Some type of rock art along the Heritage Trail, one of the spookiest places in San Antonio.
I have no idea what’s going on here.

Author’s Note

I realize it was probably the fascinating title which peaked your interest in this article. Most of the hiking trails in San Antonio are far less spooky than these at Headwaters Sanctuary. However, they have their purposes as well. I’ve written about as many as we could find. They may not have intriguing titles, but they do have scenic views, historical significance, educational information and dog friendly photos. If you enjoyed this article, you may enjoy a few of those as well.

I’m a certified personal trainer in San Antonio. After adopting Abbey, I created Places for Pups to help you get outside, exercise with your dog and have fun doing it.

We have mastered hiking in Texas Hill Country. Though we emerge from the woods unharmed, we are not responsible for you or your pets. You are solely responsible for trying exercises, or places discussed on this site.

Grab the best hiking gear and go dog friendly.  I wish you good fortune on the trails to come.


David Earley


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Deepjyoti Bhowal
February 12, 2020 9:45 pm

Keep it up bro

April 3, 2020 5:06 am

Very nice article,
This information helps me a lot.
Thanks for sharing this knowledge with us.