<P> The Modoc Plateau lies in the northeast corner of California as well as parts of Oregon and Nevada . Nearly 1,000,000 acres (400,000 ha) of the Modoc National Forest are on the plateau between the Medicine Lake Highlands in the west and the Warner Mountains in the east . </P> <P> Its landform is volcanic table land ranging from 4,000 to 6,000 feet above sea level, cut by many north - south faults . "Occasioned lakes, marshes, and sluggishly flowing streams meander across the plateau ." </P>

What large plateau is in the north-eastern part of california