Outstanding.
Now if this would have some voice-acting,something like a multiple-choice dialogue system and if it'd be a bit longer this might actually be a full-fledged adventure instead of being "just" a flash game.
In fact,this game reminds me alot of the old "Indiana Jones" series (both the films and the old video games), so I guess a part of the fun might just come the nostalgia...anyhow,this is pretty much one of the best adventures I've seen on this site so far.