Martin Grass, from Mendip Cave Rescue joins Angie and Mike to talk about all things Caving, Pot Holing and Cave Rescue. Martin talks about his greatest achievements, the excitement of finding out that more people have stood on the moon and looked at its surface than have been to a Cave he helped discover in Somerset! 

Martin also talks about supporting the Tham Luang cave rescue (Thai Cave Rescue) in 2018.