BBC 2 9.00 am to 10.00 am Lost Land of the Volcano.  OK you have missed today's episode, catch up on I-Player.  There are two more episodes, tomorrow - Thursday and Friday.

The caving is a bit hairy.  Going upstream.  It will only take a good rain storm to wash them out of the cave and down a 60 m waterfall. 
But it is OK.  Steve Backshall is leading.