The Quest, One.

A happening passing of a deeper cave leaves questions in the xenophobic Eldar's mind; from where do these strange growths come from? For he has found odd croppings of glowing rocks that seem to echo the things around them. They are only plentiful, it seems, in the dark wet places where the disgusting and fungus-infested orcs called the Globsnaga reside however. So he seeks information and learning, and is told of a deep shaft in Moria that lays out to a pool deeper in the Mines than even the Endless Stair could touch.

Though the elves warn Sila-rond of such a venture, he seems intent on making it. 

The mine shaft is treacherous, they say. It is full of rock-spikes and deadly croppings that could rend his body in two if he hits it badly on the way down.

But he is unfazed. The Eldar seems single-minded in his reasons to dive as far as he can into Moria, and they do agree that this place may very well be the foundation of all the stone around them.