The Tarnth mountains rise up from the peninsula creating the western edge of Corno Fertile, stretching from Torretta Sole in the south north before ending at the rim of Coda Carr. Together with Coda Carr the mountain range makes up the western boundary of the Groene Maart and the former Damarran Empire.
The mountains are home to the Tarnth Orcs, tribes of mountainous orcs flourishing off the unprotected trade route to Torretta Sole. In the northern, more densely clustered peaks a scattered population of ogres reign.
The range is mineral poor and covers more area than the Noir Dent Montagnes. Spring melt from the range either runs north into the carr to the north or feeds into the sea along the southern peninsula’s coastline.