The second Gate of Gondolin was the Gate of Stone, approximately half a league from the first gate. It was placed in a great wall built across the ravine from side to side, with stout towers of stone at either side. Above the road was a great archway containing a single huge block of dark and polished stone. A white lamp hung in the midst of the arch. The stone turned on an invisible pivot. After the gate was a courtyard containing many armed guards, and in the northern tower was a chamber.