I've completed every quest except...

Archived from groups: alt.games.diablo2 (More info?)

mØrß|d wrote:
> Traveling through the Ancients Way to find the Ancients @ the
> Arreat Summit. Two more levels left in the expansion, and that
> appears to be one of them. Can someone tell me how to get to this
> waypoint, or what sub-level I'll need to get through to complete
> the last two levels? The only waypoints active now are: 1)Frigid
> Highlands 2)Arreat Plateau.

Then you have missed several ones inbetween. Here you can find a
scheme on areas and the connections between them, as well as
information on waypoints:
http://www.battle.net/diablo2exp/maps/act5.shtml