The mine, half a day east from Ninerest, is now inhabited by trolls. {Branching Caves Map}.

A thin, almost overgrown trail leads into the bushes and forest that surround Ninerest.

The party spends most of the day walking through the temperate forest in its mild climate.

There is the chirping of birds and the smell of rich vegetation.

Ahead of you, there is a dark ungated mine with a rusted, old, now useless railway leading into the depths of the darkness. A slow hungry, echoing moan escapes from the mouth and a salty, griny smell escapes from the darkness.

As you enter, you notice litter around the mouth of the cave. The carcasses of rabbits and what you think is the chewed-on leg of a deer. There's also a reek of old piss along with the grungy smell.

DC 15 investigation reveals what looks like large hand marks on the walls. DC 20 investigation reveals what looks like a huge footmark of some giant creature. A closer inspection reveals that's it is most definitely that of a troll.