I researched and wrote this episode, which makes you wonder whether the ground you’re on is safe. For thousands of years, water has been slowly eroding the rock beneath your feet, creating a chasm underground. Over time, that chasm became so large that it could no longer hold up its roof. The roof that used to be your solid ground. One day, it collapsed in on itself, taking you and everything around you with it. This is a sinkhole. Terrifying, unexpected, and in some cases, deadly.
