Las Pilas (or El Hoyo) is a complex volcano located in the western part of Nicaragua. Part of a 30-km-long volcanic massif, Las Pilas has a series of well-preserved flank vents surrounding a central cone. Las Pilas last erupted in the 1950s and before that possibly in the 16th century.^[1]

Las Pilas
Las Pilas
Highest point
Elevation	1,088 m (3,570 ft)[1]
Coordinates	12°29′20″N 86°39′54″W / 12.489°N 86.665°W / 12.489; -86.665[1]
Geography
Las Pilas Nicaragua
Location	León Department, Nicaragua
Geology
Mountain type	Complex volcano
Last eruption	October 1954

An aerial image of the volcano appeared in the August 1944 issue of National Geographic Magazine (p. 180). On the slope near the peak, a curious circular 100-m diameter sinkhole visible in the 1944 photo is still present in 2020.