Andy, I'm not sure of exactly what type of photography you do, but assuming it is landscape/nature related (a pretty safe assumption since you posted here), you might be interested in a little volcano-hunting? Check this site out:Volcanology
It's definitely different and could offer a lot of very unique opportunities, BUT, unless you are an experienced vulcanologist, get a local guide from a University there! Students studying volcanoes on the Island might want a few extra dollars for guiding, and you could benefit (in terms of photos and coming back no "crisper" than you left ) from their experience and knowledge. Hawiian volcanoes are mostly "oozing" volcanoes, not explosive ones. There's a lot more to shoot than just lava of course. Lots of pioneer plants, etc., that are tolerant of the gasses from an active volcano will be present and the juxtaposition of the lush green and dark volcanic rock could make for some very interesting shots.
Anyway, just something to think about. If the idea doesn't interest you, no harm done - just ignore this :: .