This is an audio version of a lockdown video livestream special.  Etienne Stott meets two great adventurers.  Sal Montgomery talks about how she got into the extreme end of the sport - tackling waterfalls, undiscovered rivers and going on expeditions all over the world.  Sal also talks about a recent trip to Bhutan and her rescue of TV presenter Steve Backshall.  Bren Orton began on flat water and then slalom and now freestyles in some of the craziest places you can imagine.  Bren tells us where he gets his inspiration and what he's planning for post-lockdown.