> > > I am near the end of the game, Johnson is waiting for me but I'm still short of nanoxanite and Verna's card. I've been thru the s/e caverns, helped the miner, got the sledgehammer and so forth. I've explored the s/e caverns thoroughly, tried to make a map that makes sense but still can't seem to find what I need. I've done the trick with jumping back on the mine cart when you originally go southeast multiple times, and from the posts I believe I have to jump off again when I am heading south towards the narrow tunnel (which I have done) but I cannot work out where to jump on again (if that is indeed what I have to do) I've tried heading for the high ledge but that doesn't seem to work. I know there is a lot of posts about this but can anyone help me please?
> >
> >
> > Have you opened the last barrier? If you've unlocked both sides, you'll need a little more force to get it open.
>
> I unlocked both sides and rammed it with the cart, and when I jump off the 2nd time I can hear the cart in the s/e caverns as I'm exploring them but can't find a place to catch up to it if that's what I'm supposed to do.

Yes, that is what you're supposed to do. You need to find the third exit in the mines (not counting the stream). It's deep down.