China: Forest discovery amazing Giant sinkhole 630 feet (192 meters) deep
According to the Xinhua news agency, the sinkhole is 630-foot deep enough to swallow St. Louis’ Gateway Arch. Discovered in China, in which researchers have discovered a series of amazing ancient forests with trees. On Friday (May 6), a team of speleologists and spelunkers rappelled into the sinkhole, uncovering three cave entrances as well as … Read more