Duergar Outpost
21 Kythorn at 1pm-ish; Illumination: Exterior - Dim; Interior: n/a Weather: High Winds
You return to the stream that you recently crossed and follow it to a small canyon in the foothills of Kelvin's Cairn. A blocky stronghold bereft of warmth or charm juts out of a hillside in a rough crescent shape. Only part of its construction is visible; the rest is buried in the stone.
A large double door of stone serves as the main entrance. The terrain leading to it is a gently upward-sloping plain covered with fresh snow. The stream you are following used to flow out of a barred culvert northeast of the main entrance, but the waterway has frozen. Two other barred openings can be seen along the stronghold’s northern wall. Anyone positioned behind these openings would have an unobstructed view of the hillside.
Closer to you, separated from the rest of the stronghold, is a snow-covered stone bunker perforated by arrow slits.
The dim light of midday allows those without darkvision to see well enough, though it does make it more difficult for them to notice any details or danger.
How do you proceed?