Rab athlete, Tom Randall, has travelled the world in search of the quirkiest crack climbs that nature has to offer.

Faced with the prospect of a year without international travel, Tom and his climbing partner, Pete Whittaker, needed a project closer to home. And so ‘The Great Rift’ was born.

In this exclusive interview, he explains how an almost 800m, perfectly smooth, horizontal concrete crack under a motorway bridge on the M5 caught his eye.