I push the machine further and further into the future! Eventually the ground level goes down and it's safe to stop!

I don't take chances, but stop as quickly as I can. Either the ground is on aslope or I pulled too hard, as the machine fell over. But I stopped! I'm safe! Where am I? I know this used to be London, but now it seems to be hills and forests How much time has passed? It must be hundreds of thousands of years! What do I do now?

Should I lift the machine back up and get back to my own time? Or should I have a look around me? Or do something else?