The valley is sealed off because of the Cascade Variety to your northeast and by the Klamath Mountains for the northwest. In the much north the terrain is rugged and intensely forested, getting wetter within the coastal aspect and drier and barren in the higher northeast. During the south the Central Valley is shut off by the transverse ranges, mos

The valley is sealed off via the Cascade Assortment into the northeast and through the Klamath Mountains into the northwest. Inside the significantly north the terrain is rugged and heavily forested, starting to be wetter around the coastal aspect and drier and barren in the upper northeast. In the south the Central Valley is closed off via the tra