Zook gives a 'thumb's up' to Kolarred, who by this point has climbed back up on top of his horse. As first Zook, and then Luthal sneak away... Kolarred pats his mount gently to tell him that it'll be all right. But he can tell from the horse's reaction to his pat ((Handle Animal [14] + 7 = 21)) that the horse is pretty hurt and annoyed right now, having hiked up a mountain for two and a half hours after a full day's riding already. Kolarred gets the sense that if he tries to ride his horse into a battle that getting him to cooperate might be a little difficult ((-5 to any future Ride checks Kolarred makes before they rest for the night.))
Zook slides off around the left side of the clearing, hoping to get to the far side without attracting any undo attention ((Move Silently [10] + 9 = 19)). Luthal follows along behind many paces away and further into the treeline so as to cut down his shadow if anyone is watching. Zook keeps moving and does not see any indications that either he is being watched or that anyone is even around. The tower remains dark and forboding.
As he moves, Zook takes a longer look at the ruin to get a better sense of what they have here. The tower looks to be about four stories tall currently, but that is because any higher stories have collapsed at this point. The number of rocks and boulders littering the base of the tower suggests that another three or four levels could have been a part at one point. There is one door at the base which faces the path the group used to arrive here, and the rest of the tower is windowless (if any windows did exist at one point, they had to have been on the higher levels which have crumbled to the ground). The fourth story looks to be partially open to the sky, although a number of support beams and planks are still in evidence as having once been the ceiling of level four / floor of level five. There does appear to be gaps in the walls of the fourth story that if someone is up there, they could and can look out over the surrounding clearing. However, neither Zook, Luthal nor Kolarred has seen anyone or any light source up there thus far.
Zook continues his path around the clearing at the edge of the treeline, and when he finally reaches the "back" of the tower, he sees that there is no other door or window into the tower from this side. However as he continues around, he comes to a small outcropping of rock inside the treeline. When he leaps into the small crevice and glances inside... he gets the sense that this might be a small cave or perhaps even a tunnel leading up towards the tower. He signals to Luthal to come see, and as the gnoll moves to take a look, his darkvision is able to easily pick out that about ten feet into this small tunnel there appears to be a metal door barring their way. A solid guess from both ((WIS check)) tells them that this might be an escape route into and out of the basement of the tower. Both the changeling and gnoll take stock of where this tunnel is in relation to the tower, then continue back around the rest of the clearing.
As they continue around, Luthal is able to find a path leading up and away from the tower further into the hills, which he supposes to be the way the Claws probably have continued on (assuming all of them aren't currently hiding in the tower, which does not seem likely). The two finally rejoin Kolarred back at the head of the path.