The Peru–Chile Trench, also known as the Atacama Trench, is an oceanic trench in the eastern Pacific Ocean, about 160 kilometres (100 mi) off the coast of Peru and Chile. It reaches a maximum depth of 8,065 meters (26,460 ft) below sea level in Richards Deep (23°10′45″S 71°18′41″W / 23.17917°S 71.31139°W / -23.17917; -71.31139) and is approximately 5,900 kilometres (3,666 mi) long; its mean width is****kilometres (40 mi) and it covers an expanse of some 590,000 square kilometres (228,000 mi²).