Help with Blind Leaper deed

Hello:

I'm trying to get the blind leaper deed but I ran into some trouble early on when I tried to do the one at the lava pit at the Endless Stair in Nud-melek - go to 10.1s, 100.6w and jump East. I actually can't figure out how to get to the endless stair in nudmelek - I've been looking around the orc camp that's south of the second hall (I don't remember the name but it's the one headed towards the foundations of stone). Can anybody give me a rough description on how to get to the coordinates?

Thanks!