Oregon Summer Day Camps

Oregon Geography

List of counties in Oregon, List of cities and unincorporated communities in Oregon, Oregon Geographic Names, List of rivers in Oregon, List of Oregon mountain ranges, List of Oregon state parks, and Oregon census statistical areas National parks and historic areas in Oregon Entity Location Crater Lake National Park Southern Oregon John Day Fossil Beds National Monument Eastern Oregon Newberry National Volcanic Monument Central Oregon Cascade–Siskiyou National Monument Southern Oregon Oregon Caves National Monument Southern Oregon California Trail Southern Oregon, California Fort Vancouver National Historic Site Western Oregon, Washington Lewis and Clark National Historic Trail IL, MO, KS, IA, NE, SD,ND, MT, ID, OR, WA Lewis and Clark National and State Historical Parks Western Oregon, Washington Nez Perce National Historical Park MT, ID, OR, WA Oregon Trail MO, KS, NE, WY, ID, OR Oregon's geography may be split roughly into eight areas: Oregon Coast—west of the Coast Range Willamette Valley Rogue Valley Cascade Mountains Klamath Mountains Columbia River Plateau Oregon Outback Blue Mountains The mountainous regions of western Oregon, home to four of the most prominent mountain peaks of the United States including Mount Hood, were formed by the volcanic activity of Juan de Fuca Plate, a tectonic plate that poses a continued threat of volcanic activity and earthquakes .