A billionaire has discovered a complex cave system beneath his golf course following the opening of a huge sinkhole. Johnny Morris opened the Top of the Rock Golf Course in 2014, but came close to closing it following the appearance of the sinkhole a year later. Yahoo News reports: But rather than fill in the hole on the grounds on the Ozarks mountain range in Missouri, the 68-year-old businessman decided to explore. The cave enthusiast had previously discovered a cave on his grounds in 1993, which he dubbed ‘John L’s Cave’ – and the sinkhole on the golf course seemed to be part of it. Water from a pond drained through the hole and a worker near John L’s Cave said he saw a torrent of water pouring down through it. Morris said: “So I knew there was a connection. And that’s when we started to dig.” He discovered tall limestone formations and evidence of a cave network down the now 100ft hole on the course. But he has no idea just how vast it could be. He added: “Whether it’s just like a foxhole thing you have to crawl in or whether there’s big caverns, that’s the mystery, and [...]