Both coastal and inland North County contain two types of topography. In coastal areas of North County, the land is generally flat with low rolling hills. The beaches are sandy with occasional tidepools and rocky reefs. In some cases, the coast is dominated by type geography, where the land meeting the ocean sharply drops into the sea with a short beach. In some cases, such as in Encinitas, a whole city is bisected by a coastal foothill ridge. The foothills of mountains soon become visible as one travels further east and encounters the rocky peaks of inland North County. Such peaks include San Marcos Mountain, Palomar Mountain, Twin Peaks in Poway, Mount Woodson in Ramona, and Iron Mountain in unincorporated territory. The coastal area also becomes more rugged to the north, where the Santa Margarita Mountains dominate the area within the Marine Corps Base Camp Pendleton.