For the natives living in the northern Underdark, natural passages leading to the surface were exceedingly scarce, and the vast majority were heavily guarded by renowned surface powers. After all, those places were basically naturally rich mining zones—the untouchable forbidden preserves of those factions.
Take Mirabar, which had risen on the back of its mineral wealth; Mithril Hall, the lair of the Shield Dwarves; Citadel Adbar and Citadel Felbarr, defended by the descendants of the ancient Kingdom of Delzoun dwarves; the clusters of watchtowers Water-Drawing City had established in the Sword Mountains after driving off the tide of trolls; or the former Drow road of conquest near Lost Peak, leading into the High Forest.
Approaching any of those mining passages without the right connections could easily stir up needless conflict. Even though Kangerweian had now advanced to Legend, he had no wish to provoke trouble lightly.
As for the route leading into the High Forest, where scarcely any elves remained these days, Kangerweian had no desire to anger the groves of ancient natural trees that had gone mad after being abandoned by the elves.
Thus, naturally, they could only choose the natural cavern that the Drow of Gershon City had once used with Luskan to smuggle Energy Potions, leading to the border between Watchcliff Tower and the Neverwinter Mountains.
This was also the choice of most subterranean creatures. Though Watchcliff Tower was likewise occupied by an endless stream of monsters, they were mostly hill giants, Ogres, Gnolls, and the like.
When he had only just come of age, he had already had more than one tribe of Gnolls and Ogres as Retainers. Naturally, he feared no such creatures.
Unfortunately, before he could slaughter in all directions and sweep across the Underdark, that bastard named Tibilus had beaten him back into