These are all metaphors for epiphanies. The mountain top, lighthouse, ladder/staircase, island, and tower.
Signifiers such as these pictures can be seen everyday. We live our lives around signs and what they signify. A couch represents comfort, so when we want comfort we sit down. These common thoughts between what something is and what it represents are overlooked. This subconciouse connection is automatic. Thinking deeper into the subject of human connections and truths could be interesting or perhaps insane. This idea is something I may or may not write about for my final paper. I first need to delve deeper into the idea before anything is seriously written.