The main entrance has two sets of double doors with trapdoor inside . The inner doors are quite old. On several of the lower levels, large trap doors are still functional. They could be opened to move supplies within the lighthouse. The lighthouse's spiral staircase that is located in the central core of the lighthouse.
Doors open into the central core at each level.
The floors here have wooden decking, most of which is still in good condition. This is a rather poor photograph of the stairway in the lower part of the tower. Farther up the tower is a door on the spiral stairway . It is ingeneously made so that if you bolt it from the upper side, there is no way anyone can force their way to the top of the tower. This door appears on the original engineering drawings, so it was a part of the original 1858 design.