The well of time is the origination of all time in the world, beneath The Storehouse of Light
A relatively small space, seeming a natural cavern in a hard, rocky substance. The well of time is actually a demi plane from which all time radiates. The Temporal Harmonizer, a great billows of sort fueled by the inferno above ensures that the outflow of time remains even.
The well of time's only opening is immediately beneath the Storehouse of Light at the center of the universe. The well of time is always full of Pyre Beetles, and it filled with the shattered remains of the Eternal Bastion.