Sinkhole rain. An analysis of a case of sinkhole formation under a retention pond due to a large amount of rain can be seen in a sinkhole collapse study. Sinkholes have been used for centuries as disposal sites for various forms of waste. A consequence of this is the pollution of groundwater resources, with serious health implications in such areas. The Maya civilization sometimes used sinkholes in the Yucatán Peninsula (known as cenotes) as places to deposit precious items and human sacrifices. When sinkholes are very deep or connected to caves, they may offer challenges for experienced cavers or, when water-filled,
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