There is no bedrock anywhere near the surface here. Houston sits on thousands of feet of sand and clay washed off the Rocky Mountains and dumped by rivers across a subsiding coastal plain, and the layer everything is built on — the Beaumont Formation — is a Pleistocene clay laid down when sea level was different. That clay swells when it takes on water and shrinks hard when it dries, moving several inches through a wet year and a drought, which is the reason foundation repair is an industry here and why so many slabs crack in the same direction.
Getting there
29.7100, -95.5400
Locations are approximate and may be inaccurate, on private land, or otherwise inaccessible. Check before you travel.
Hear it from the road
Whistlestop tells you this story automatically when you drive past. No searching, no tapping, nothing to ask.
