The Great Descent

Also known as The Steps.

The Great Descent is a kilometre long staircase descending from an entrance in the mountains of Umbara's Peaks down into Umbara's Underdark.

History
The great descent is an ancient staircase descending from the surface world to the Underdark.

It was built by The Smiling Ones a millennia ago, as a route from Umbara's Peaks to the Great Temple of Memnor, a temple dedicated to Memnor. This temple was built long before the Drow resided in the Underdark beneath Umbara's Peaks.

The Rebuilding Era
The great descent was ruled by two leaders, known as The Twin Pillars.

Culture
Most people wear ponchos (citizens) or cloaks (soldiers).