The halfling ducks off into the underbrush to take a quick look around. The walls of the castle look to be around 50 feet high, 160 feet wide and 120 feet deep, and butt up against the canyon walls. Peeking through the large hole in the outer wall to the left of the front gate, Corby can see a courtyard strewn with rubble and large pieces of masonry from the central keep. No other easy way in seems to be apparent, although due to the poor condition of the outer walls, climbing them would not be terribly difficult.
The keep within looks to be in the same shape as the outer wall. The second story has completely collapsed into the first. The only thing in decent shape are the front double doors, although without going into the courtyard for a closer look it is hard to say for sure.
Despite studying all three sides of the keep, and going to within 50 feet of the walls, Corby does not seem to see any inhabitants.
On his way back to the rest of the group, the halfling notices numerous tracks made in the soft earth. They seem to follow a path which connects the castle to an old logging road which he hadn't noticed before, and seem to indicate that a cart and numerous humanoids passed through recently.