I know, because i am standing in it. =)

I have yet to find a gate in, though we found wht we think is a gate out.
Only way in is via your friendly wizard friend and an expensive regent.
When you first gate in, the area is safe, nothing will attack you. This is
much, much different the pof, and imo makes the poh much safer. Spawn is
also faster than 12 hours, unlike the pof, WE THINK. Some funky things
going on with tracking and we are not positive. We have killed quite a few
things so far, and are fairly deep in. Right now we just got slaughtered
when our fearless puller brought one too many fetid fiends (well not fetid
fiends, they look the same, have a different name that i keep forgetting,
spent far too long in the pof :) AND the maestro of rancor. The maestro had
a mace, im hoping the bardic mace of ultimate slaying :), hopefully we will
find out later heh, right now we just finished corpse retrieval and are
rebuffing.

SPOILERS (well more so than above anyways :)

we found a kick ass enchanters robe that looks like cryosilk but is deep
blue (bleh imo). Stats are incredible, will show up on the spoiler sights i
am sure. Found a crappy wizard wand, and we found the kiraikuei (zombie
monks) drop indocilite, the forsaken revanants dropped the enchanters robe,
and the clerics of innoruk drop, surprise, ethereal armour. Thats all i can
think of for now, we are attemping to locate the maestro since he is no
longer back at his organ anymore.