He arrives at the cavern, with no sign of more gremlins. The wall is made of a smooth, gray metal, harder than steel. An analysis, comparing it to metals he knows, identifies it as a lesser form of the Mithantine he's familiar with; this is a merging of iron and adamantine, as strong and durable as mithril, but three times heavier than steel. In other words, virtually impenetrable, to any weapons he could muster, at the moment.<br/><br/>The door on the wall is sealed tight, and while there is a handle, pulling on it accomplishes nothing. It seems it's locked from the other side.