The Timberchill Expedition

An expedition went out three weeks ago and never came back. The cartographer wants their maps.

Requirements

Speak to the cartographer at Timberchill Bank
She rolls a half-finished map between her fingers. 'Four scouts, three weeks overdue. I want the maps back, the scouts if they're standing. Walk the route they took.'
Pick up the trail at the camp
The camp was struck in a hurry. Two tents still pegged, one toppled. A waxed map case sits under a stone, dry. The route they were following turns west into Farnorth ground.
Ask after them at the Farnorth Inn
The innkeeper remembers them. 'They drank one round, slept one night, and went out before dawn. The youngest left her notebook. I kept it for her.' She hands you the notebook.
Match the notebook to the patch
Her notebook has a sketch of the patch from the wrong angle. She drew it on the way back, not the way out. Two of the four had turned around. The other two kept walking.
Catch the returning pair at the camp
Two of the four are sitting at the cold fire pit, frostbitten and quiet. 'The other two went further. We told them not to. Their maps are in the case under the stone.'
Bring the maps and the two back
The cartographer reads the case in silence. 'These maps reach further north than anyone has charted. I'll send a proper team for the other two. You did the part I needed.'