The Island of Destiny

You walk around the cove a little bit and it seems pretty empty besides that submarine. But just then, you notice there is a different texture to part of the rock wall around the cavern. You press on it to feel and to your surprise, the rock formation shifts and slides down to reveal a staircase leading down somewhere into the rock! You drop your mouth in wonder and now you realize you are stuck with a tough choice.

Should you chance taking an adventure into this island and find out what the nature of this place truly is? Or is the want for a way home that bad...that you feel you need to take the submarine right now to escape this insane island?