scout24
Flashaholic
User "stollman" posted a cool 20 minute caving video in this thread in HID lights section... Worth a watch!
http://www.candlepowerforums.com/vb/showthread.php?412887-Deep-Darkness-Cave-Trip-w-HIDs
http://www.candlepowerforums.com/vb/showthread.php?412887-Deep-Darkness-Cave-Trip-w-HIDs