Wonder Cave is a cave in Gonzales County, Texas. The nearest town is Gonzales, about 11.8 km (7.3 mi) away (Wonder Cave lies WNW of town).
Wonder Cave is a show cave located in the Balcones Fault in San Marcos, Texas. Its entrance is one mile southwest of the Hays County Courthouse. The cave is reported to be the only commercially operated dry-formed cave in the United States ("dry-formed" because the fissure was opened not by erosion but by the earthquake that produced the Balcones Fault). The fault itself is visible in the cave's ceiling. Originally named Bevers Cave after Mark Bevers, who discovered it in 1893, the cave for a while concealed Bevers' illicit distilling and gambling enterprises. The cave is also home to the Wonder World amusement park, that features tours of the multichambered cave and a wildlife park. .From the Wikipedia article “Wonder Cave (San Marcos, Texas)”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Wonder Cave 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) | 7:35 AM | 90° E | 7:42 PM | 271° W | 60° | 12h 07m |
| June solstice (Jun 21) | 6:32 AM | 62° ENE | 8:34 PM | 298° WNW | 84° | 14h 02m |
| September equinox (Sep 22) | 7:19 AM | 89° E | 7:28 PM | 271° W | 61° | 12h 09m |
| December solstice (Dec 21) | 7:22 AM | 117° ESE | 5:37 PM | 243° WSW | 37° | 10h 15m |
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 | 7:01 AM | 7:27 AM | 8:02 AM | 5:19 PM | 5:54 PM | 6:20 PM | 10h 27m |
| February | 6:46 AM | 7:11 AM | 7:43 AM | 5:47 PM | 6:20 PM | 6:44 PM | 11h 10m |
| March | 7:17 AM | 7:41 AM | 8:12 AM | 7:08 PM | 7:39 PM | 8:03 PM | 11h 58m |
| April | 6:40 AM | 7:04 AM | 7:36 AM | 7:25 PM | 7:57 PM | 8:22 PM | 12h 53m |
| May | 6:13 AM | 6:39 AM | 7:12 AM | 7:43 PM | 8:16 PM | 8:42 PM | 13h 38m |
| June | 6:04 AM | 6:31 AM | 7:06 AM | 7:58 PM | 8:32 PM | 9:00 PM | 14h 02m |
| July | 6:14 AM | 6:41 AM | 7:15 AM | 7:58 PM | 8:33 PM | 8:59 PM | 13h 52m |
| August | 6:34 AM | 6:59 AM | 7:32 AM | 7:40 PM | 8:12 PM | 8:37 PM | 13h 13m |
| September | 6:52 AM | 7:16 AM | 7:47 AM | 7:06 PM | 7:37 PM | 8:01 PM | 12h 21m |
| October | 7:08 AM | 7:32 AM | 8:04 AM | 6:29 PM | 7:01 PM | 7:25 PM | 11h 29m |
| November | 6:30 AM | 6:55 AM | 7:30 AM | 5:02 PM | 5:36 PM | 6:01 PM | 10h 41m |
| December | 6:52 AM | 7:18 AM | 7:54 AM | 4:58 PM | 5:34 PM | 6:00 PM | 10h 16m |
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 Wonder Cave, 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 32° above the southern horizon. Our light-pollution model puts the sky at about Bortle 3 (rural sky), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 2° | — |
| February | 4:50 AM – 5:40 AM | 0.8 | 19° | SE → SE |
| March | 3:58 AM – 6:18 AM | 2.3 | 28° | SE → SSE |
| April | 2:00 AM – 5:40 AM | 3.7 | 32° | SE → S |
| May | 11:56 PM – 5:06 AM | 5.2 | 32° | SE → SSW |
| June | 10:08 PM – 4:48 AM | 6.7 | 32° | SE → SW |
| July | 10:05 PM – 3:25 AM | 5.3 | 32° | SSE → SW |
| August | 9:37 PM – 1:27 AM | 3.8 | 32° | S → SW |
| September | 8:57 PM – 11:17 PM | 2.3 | 29° | SSW → SW |
| October | 8:20 PM – 9:20 PM | 1.0 | 20° | SW → SW |
| November | Below 10° in darkness | — | 5° | — |
| 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: 3 Bortle 3 — Rural sky. Some light domes sit on the horizon, but the Milky Way still looks complex overhead. Modeled zenith brightness ≈ 21.26 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show October as the clearest month (about 38% average cloud cover) and February as the cloudiest (62%). 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 | 86 | 92 | 96 | 103 | 104 | 110 | 110 | 113 | 110 | 100 | 91 | 86 |
| Low °F | 20 | 18 | 23 | 34 | 44 | 62 | 67 | 65 | 52 | 36 | 25 | 22 |
| Precip. (in) | 2.2 | 1.7 | 2.6 | 2.6 | 3.8 | 3.0 | 2.9 | 2.6 | 3.8 | 3.2 | 2.3 | 2.0 |
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 Wonder Cave, closest first.
FAQ
When is the best time to photograph Wonder Cave?
What time is golden hour at Wonder Cave?
Where does the sun rise and set at Wonder Cave?
Can you see the Milky Way from Wonder Cave?
Do you need a permit to photograph at Wonder Cave?
How far is Wonder Cave from Gonzales?
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.