The Obsidian Overlook[[:File:|[, ]]] is a simple Flight Path on the southern-most point of Highmountain, closest to Frosthoof Watch. Aside from leaping from the Watch or Greystone, adventurers can proceed through Neltharion's Vault[[:File:|[, ]]]. In the Vault, take the hidden path to the left just after the tortoise shell table. Proceed down, following to the right, and then continue to follow the path out to the Overlook. There will be plenty of mobs along the way to contend with.