For those of you that lived in trammel, and obviously have no idea what the hell Khaldun is, Khaldun was a, and the only felucca-only dungeon on OSI. Every other dungeon was available on both facets. It's a place where, on OSI (doubt it's like that here) where you could find scimitars and cutlass' in power and vanq rather easily.............. if you didn't get pked first.
It was personally my favorite dungeon, being there's a wide range of beings inside. A lot of the creatures inside aren't seen anywhere else... versus liches or drakes where they are seen in a dozen different places across the UO world.