Have you seen The Siege AA lantern yet? It features one C4 Power LED and two red LEDs. With five output modes it can serve you well, and the battery level indicator built into the on/off button keeps all the guess-work away.
When the outer lantern glove is in place the light will float. It's your choice to use the lantern with or without the outer glove cover on. You simply remove the outer globe and hang the body upside down by the D ring for larger area lighting needs.
Streamlight made this with C4 LED technology to give that extreme brightness factor. The lantern is IPX7 rated for water proof operation (so 1 meter submersion). It's floatable, which is a huge perk. The lantern is also 2 meter impact resistance tested which is great when you're out in that rugged, unknown terrain.
The D-Ring is great for that easy attachment wherever and whenever you need it, and it's even spring loaded to just stay out of the way when it's not in use. The ergonomic handle makes it light and easy to carry, and designed to just be able to hook on any edge or bar when you need it.
Backed by Streamlight's Limited Lifetime warranty, the 360 degrees of soft, even light that comes from the Lantern will be well worth the investment. The tough polycarbonate thermoplastic construction will hold up for years and years and is meant to be roughed around with in those outdoor situations.