Hi guys I've played the freeplay mode for a few hours now and almost completely dug through, dynamited and demolished 95% of the digging area. it's now just an empty void. and i've managed to get through to the centre of the earth right at the bottom. which is about 600 meters down or so. is there something else i can do? only there's a turny-wheel port-hole thingy down there. is that part of another mission? i have nothing else left to dig or collect.
