Volcano Explorer, Man, Olive Green Jumpsuit with Straps, White Hard Hat with Visor, Breathing Apparatus, Airtanks, Stubble

Comes in 3 sets, made of 7 parts. The lowest-priced set it comes in is 60122 Volcano Crawler (RRP £24.99).

Check the minifigures carefully when buying a used set: they're part of its grade.