Pipe Creek Sinkhole have also been found there. Pipe Creek Sinkhole preserves an ancient wetland. It was created by the collapse of a limestone cave in a Silurian reef formation. That left a steep-sided depression about long, wide and deep. When water collected in the depression, it became the habitat of the plants and animals whose remains were preserved there when the sinkhole was buried by glacial outwash and till during the Pleistocene Epoch, two million to 11,000 years ago. While the ecology of the Pliocene in North America is well-known from fossil discoveries in other places, notably coastal sites, the Pleistocene glaciers
Tiny (Once Upon a Time) Anton concludes that all humans are liars and resumes his attacks. David offers to surrender himself if Anton will spare everyone else. When Anton leaps towards David, he crashes through the ground into a sinkhole just as the mushroom wears off, leaving him human-sized and clinging to a pipe. David leads the townspeople in rescuing a despondent Anton from the pit, restoring his faith in humans. Anton is welcomed by the townspeople. He reveals the beanstalk stems and is brought to fertile farmland where he could grow beans, making it possible to return to the Enchanted Forest. He warns that