Old Stovepipe Well, an important water source for miners and prospectors during the late 19th and early 20th centuries. It is named for the length of stovepipe that was driven into the well, marking the site from shifting sands. Later, a small town was located here. Death Valley National Monument Est. February 11, 1933. Est. as Death Valley National Park in 1994; 5,270 square miles (13,649 km2). Inyo County, CA.