Grik'tyr
Grik'tyr is one of a number of valences from which sorcerers are able to summon demons. The grik'tyr (rune) is found on scarred brown runestones and can be drawn by any sorcerer with knowldge of Minor Summoning (725).
Grik'tyr is a valence that is comprised of vast expanses of rocky plains, litered with craggy cliffs, boulders and rubble. These plains are interrupted only by vast networks of shallow canyons. Seemingly devoid of water, and constantly battered by heavy winds, the valence is quite desolate. The skies are generally a uniform grey overcast, and aside from the winds, there seem to be no varying weather patterns.
Grik'tyr is inhabited by at least two demons archetypes, the grik and the imps. Both seem to be able to survive in the harsh environment of Grik'tyr, though little is known about these practices.
Within the valence, the grik live in tribal societies, divided into at least four factions. These tribes are often at war with each other, and when not, the peace between them is temporary at best. Their wars tend to be over territory, though it seems resources play into them as well. While they outnumber to grik, the imps are used as slaves by the grik, and they are very subservient to them, to the point that at the command of one grik, and imp will disobey its original master in sheer fear of the consequences of disobeying at all.
External links
The Enchiridion Valentia: http://www.play.net/gs4/info/tomes/demons/enchiridionvalentia.asp