There's no easy way to open the gate from this side, but a bit of subtlety allows them to quietly dismantle it, over the course of a few hours, since they had time to kill. Beyond, the tunnel branches in two direction, the first being a small storage room full of what look like emergency escape supplies. Magical detection locates one of the bags as being a Bag of Holding (Type 1), filled with potions - 11 of them in total, though three are non-magical.<br/><br/>The other route leads into a large, but empty cavern, then narrows into a small tunnel, ending at the backside of what is, presumably, a secret door.