Furthest from home I have been is North Carolina with my then girlfriend ( when we lived in kent UK). The most indy like thing ive done during my formative years (about 18ish I think). When I lived on the isle of sheppey a cliff edge dropped revealing a small tunnel system. So mysrlf and a couple fruends decided to gear up and go gor a look. Incredibly stupid and dangerous but as we all know when you are 18 you are indestructable.
However after getting torches and stuff for the expedition we entered the tunnel. It turned out only be about 15' deep. Never mind..... but the next day another land slip covered it over..... NEVER TO BE SEEN AGAIN!!!
Oh and my then girlfriend is no longer my girlfriend.....
SHE's MY WIFE... (holds out fist for fist bump).