By Phyllis Domingo, REALTOR® · San Antonio Relocation Specialist · 6 min read Cave Without a Name is a National Natural Landmark about 10 miles from Boerne with roughly 5,700 feet of mapped passage and a constant 66 degrees year-round. The goat that discovered it in 1927 was only the beginning.
The numbers that set the scene
Cave Without a Name sits about 10 miles northeast of Boerne off FM 474, roughly 40 miles from downtown San Antonio. It was discovered in 1927 when a goat fell through a sinkhole, and it opened to the public in 1939, per the cave's official site and the TSHA Handbook of Texas.
The Texas Speleological Survey lists the cave system at about 5,725 feet of traversed passage and roughly 128 feet deep, and the guided tour descends 126 steps to about 80 to 90 feet below the surface. The temperature holds at a constant 66 degrees year-round, which does most of the selling on a Texas August afternoon.
Why it has no name
The cave earned its name when a young boy, asked in a naming contest what it should be called, reportedly said it was 'too pretty to have a name.' The name stuck, and so did the prettiness: the cavern was designated a U.S. National Natural Landmark in 2009, per Wikipedia.
The tour, honestly
Guided tours run about 60 minutes through six major rooms on easy, well-lit walkways. There are 126 steps down on the way in, which means 126 steps up on the way out, so the tour is family-friendly but not effortless, and the fit ranges from retirees to school groups.
This is a living cave in the technical sense, still shaped by water, and the largest chamber, the Queen's Throne Room, hosts concerts inside the cavern on a regular schedule. That is exactly as magical as it sounds, and the official site posts dates.
Plan the whole day
The cave is the anchor, but the day around it matters. Boerne's Hill Country Mile is about 15 minutes south, Guadalupe River State Park is a short drive away, and the route out FM 474 is classic Hill Country: limestone, live oaks, and long views. A morning tour, lunch in Boerne, and an afternoon on the river adds up to a full, honest Hill Country day.
Weekends draw families and groups, so it is worth confirming tour times on the official site before you drive out, especially in summer and around school breaks.
Who tends to love it
A few kinds of visitors make Cave Without a Name a regular stop:
- Families with curious kids who are ready for a real adventure, stairs included.
- Anyone escaping a Texas heat wave, since 66 degrees is the whole point.
- Day-trippers pairing the cave with Boerne, the river parks, or Fredericksburg.
- First-time cave visitors, because the smooth walkways and bright lighting make this one of the gentler show caves in Texas.
The honest take
A cave tour is the kind of day that makes the Hill Country feel like a resort, and it sits 10 miles from a Main Street that does the same thing at ground level. When you want the honest tour of Boerne and the neighborhoods around it, call or text me at 210-744-5478 or use the contact page. No pressure, just the picture.
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Sources
The numbers in this post were checked against these sources on October 6, 2026.
