Riddles of the Messenger

There are some of us who have more trouble than others in the roleplay figuring out riddles. Thus, this forum will be to figuring them out so that the roleplay isn't spammed.

The first riddle will be posted before the roleplay starts. The others will be posted as the roleplay progresses. Aaron will be playing 'The Messenger'.

This one is a description of where Aaron is.
Can you guess it?

First Riddle wrote:

"Beneath the leaves of endless fall
Lies the Secret to them all"

"The key is to the thoughts of past
The memento that shall always last"

The first one to figure out each riddle will be awarded Glaciers, in cooperation with our new system. As the event moves on, the riddles will get harder.