Located in Comal County, Texas, Natural Bridge Caverns is a cave. It sits roughly 7.3 km (4.5 mi) NNW of Garden Ridge.
The Natural Bridge Caverns are the largest commercial caverns in the US state of Texas. The name is derived from the 60-foot (18 m) natural limestone slab bridge that spans the amphitheater setting of the cavern's entrance. The span was left suspended when a sinkhole collapsed below it. The caverns are located near the city of San Antonio, Texas, in the Texas Hill Country next to the Natural Bridge Wildlife Ranch, a drive-through wildlife safari park. The caverns feature several unique speleothems and other geological formations, including magnificent stalactites that hang from the ceiling . The temperature inside the cave is 70 °F (21 °C) year-round and the humidity rate is a constant 99 percent. The deepest part of the public tour is 180 feet (55 m) below the surface, although undeveloped areas of the cavern reach depths of 230 feet (70 m).From the Wikipedia article “Natural Bridge Caverns”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Natural Bridge Caverns the sunrise point swings a long way through the year: about 62° (ENE) at the June solstice and 117° (ESE) in late December. Sunset moves from 298° (WNW) in June to 243° (WSW) in December, and the midday sun climbs to 84° in summer but only 37° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:38 AM | 90° E | 7:45 PM | 271° W | 60° | 12h 07m |
| June solstice (Jun 21) | 6:34 AM | 62° ENE | 8:37 PM | 298° WNW | 84° | 14h 03m |
| September equinox (Sep 22) | 7:22 AM | 89° E | 7:31 PM | 271° W | 61° | 12h 09m |
| December solstice (Dec 21) | 7:25 AM | 117° ESE | 5:39 PM | 243° WSW | 37° | 10h 14m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Caves are lit artificially — show caves have fixed lighting, so a fast lens and high ISO beat flash, which flattens formations.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:04 AM | 7:30 AM | 8:05 AM | 5:22 PM | 5:57 PM | 6:22 PM | 10h 27m |
| February | 6:49 AM | 7:14 AM | 7:47 AM | 5:50 PM | 6:23 PM | 6:47 PM | 11h 09m |
| March | 7:20 AM | 7:44 AM | 8:16 AM | 7:11 PM | 7:42 PM | 8:06 PM | 11h 58m |
| April | 6:43 AM | 7:07 AM | 7:39 AM | 7:29 PM | 8:01 PM | 8:25 PM | 12h 53m |
| May | 6:15 AM | 6:41 AM | 7:15 AM | 7:46 PM | 8:20 PM | 8:46 PM | 13h 38m |
| June | 6:06 AM | 6:33 AM | 7:08 AM | 8:01 PM | 8:36 PM | 9:03 PM | 14h 02m |
| July | 6:17 AM | 6:44 AM | 7:18 AM | 8:02 PM | 8:36 PM | 9:03 PM | 13h 52m |
| August | 6:37 AM | 7:02 AM | 7:35 AM | 7:43 PM | 8:15 PM | 8:41 PM | 13h 13m |
| September | 6:55 AM | 7:19 AM | 7:50 AM | 7:09 PM | 7:40 PM | 8:04 PM | 12h 21m |
| October | 7:12 AM | 7:36 AM | 8:08 AM | 6:32 PM | 7:04 PM | 7:28 PM | 11h 28m |
| November | 6:34 AM | 6:59 AM | 7:33 AM | 5:05 PM | 5:39 PM | 6:04 PM | 10h 40m |
| December | 6:56 AM | 7:22 AM | 7:58 AM | 5:01 PM | 5:37 PM | 6:03 PM | 10h 15m |
Local time (America/Chicago), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Natural Bridge Caverns, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 6.7 hours on a moonless night), and the core peaks around 31° above the southern horizon. Our light-pollution model puts the sky at about Bortle 5 (suburban sky), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 2° | — |
| February | 4:53 AM – 5:43 AM | 0.8 | 18° | SE → SE |
| March | 4:01 AM – 6:21 AM | 2.3 | 28° | SE → SSE |
| April | 2:03 AM – 5:33 AM | 3.5 | 31° | SE → S |
| May | 12:00 AM – 5:10 AM | 5.2 | 31° | SE → SSW |
| June | 10:12 PM – 4:52 AM | 6.7 | 31° | SE → SW |
| July | 10:09 PM – 3:29 AM | 5.3 | 31° | SSE → SW |
| August | 9:41 PM – 1:21 AM | 3.7 | 31° | S → SW |
| September | 9:00 PM – 11:20 PM | 2.3 | 28° | SSW → SW |
| October | 8:23 PM – 9:23 PM | 1.0 | 20° | SW → SW |
| November | Below 10° in darkness | — | 4° | — |
| December | Below 10° in darkness | — | -18° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 5 Bortle 5 — Suburban sky. The Milky Way is weak near the horizon and washed out overhead; long exposures pick up a sky glow. Modeled zenith brightness ≈ 20.08 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show August as the clearest month (about 41% average cloud cover) and March as the cloudiest (61%). August is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 84 | 95 | 95 | 103 | 105 | 109 | 110 | 112 | 108 | 99 | 90 | 84 |
| Low °F | 20 | 18 | 22 | 34 | 43 | 61 | 64 | 65 | 51 | 34 | 25 | 23 |
| Precip. (in) | 1.9 | 1.6 | 2.4 | 2.5 | 3.8 | 2.9 | 2.8 | 2.4 | 3.8 | 3.0 | 1.9 | 1.7 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this cave
- Use manual focus with focus peaking in low light.
- Never touch formations — skin oils stop their growth.
- Follow White-nose Syndrome decontamination rules where posted to protect bats.
- Many show caves restrict tripods on tours; ask in advance or bring a small beanbag.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Cave interiors stay at a constant temperature year-round; summer tours fill up, so book ahead.
Suggested gear: Fast lens (f/1.8–f/2.8), High-ISO camera, Small beanbag. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Natural Bridge Caverns, closest first.
Cave
Cave
Scenic Viewpoint
WaterfallWaterfallScenic ViewpointWaterfallCampgrounds nearby (Recreation.gov)
- Cranes Mill Park22 km (14 mi) · reservable
- North Park24 km (15 mi) · reservable
- Potters Creek Park25 km (15 mi) · reservable
FAQ
When is the best time to photograph Natural Bridge Caverns?
What time is golden hour at Natural Bridge Caverns?
Where does the sun rise and set at Natural Bridge Caverns?
Can you see the Milky Way from Natural Bridge Caverns?
Do you need a permit to photograph at Natural Bridge Caverns?
How far is Natural Bridge Caverns from Garden Ridge?
Sources
Location data: Wikidata, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.