The Drunken Lizard Pub

I`m stuck in the witch`s lair I have progressed pass the floor puzzle and am just passed the stairway that leads back up to the forest (with the blue globes) now what do I do.please help a very old player.

The stairway up to the other side of the river is the end of the dungeon. There's another entrance to the part you can't reach.

where is other entrance,i`ve been two days on the witch.

Look for a trapdoor beyond the geo marker and tree.