A cave believed to have the biggest chamber in Britain has been unearthed in the Peak District in Derbyshire. Titan's main shaft is 460ft (140m) deep, as high as the London Eye, sculpted out of limestone by rain water over millions of years.
Titan was discovered on the 1st of January 1999 and is the biggest natural shaft in the UK, standing at 141.5m (464ft). The choke through which it was found is a major feature of Peak Cavern's Far Sump Extension and has been known about since 1981 when Far Sump was first passed. Various divers investigated the site but it was obvious that digging through it would require a great deal of effort and equipment. In light of other "open" leads the choke was relegated to the long term "to-do" list. In hindsight, the dig would not have been a practical proposition for divers entering via Far Sump. The severity of the dive combined with the amount of equipment required and the inherent risks of dismantling boulder chokes from below would prevent a serious assault being made until a dry way into the extension had been found. There had to be one somewhere as there was evidence that lead miners had gained access.