Tales of Tolgard
Pech are four foot tall elementals from the Plane of Earth. They are thin and have long arms and legs. They have broad hands and feet which are excellent for bracing and employing tools to work stone. Their skin is pale and yellowish and they have reddish brown hair; their flesh is as hard as granite. Their large eyes are pupil less and they have darkvision.
Some of them have extensive mines in the deepest regions of Materia. However, they prefer dark places and work stone. They can not only can speak to the stone but shape it as well. When pech visit the Material Plane they usually appear in the Underdark which is a less hostile place than their home plane.
Pech are usually found in the Underdark.