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Las Pilas Volcano

Updated: Mar 29, 2024 10:35 GMT -
volcanic field 1088 m / 3,570 ft
Nicaragua, 12.5°N / -86.69°W
Current status: normal or dormant (1 out of 5)

Las Pilas volcano is a volcanic complex near Cerro Negro volcano 75 km NW of the capital Managua.
The volcano consists of several cones around the central vent, Las Pilas, which contains a 700 m wide and 120 m deep crater and is the site of the recent activity.
El Hoyo is a 150 m deep pit crater immediately SW of the main crater. It contains particularly strong fumaroles and produces sometimes dense plumes of gas and steam.
The only certain historic activity from Las Pilas were 2 phreatic eruptions from a fissure on the eastern side of Las Pilas cone in 1952 and 1954. An eruption in the 16th century is uncertain.

[smaller] [larger]
Typical eruption style: explosive
Las Pilas volcano eruptions: 1994 (?), 1954, 1952, 1528 (?)

Latest nearby earthquakes

TimeMag. / DepthDistance / Location
Mar 28, 01:52 am (Managua)
Mar 28, 07:52 GMT
1.4

11 km
23 km (14 mi) to the N Nicaragua, 38 km northeast of Leon, Leon Info
Friday, March 22, 2024 GMT (1 quake)
Mar 22, 07:21 am (Managua)
Mar 22, 13:21 GMT
1.5

5 km
28 km (17 mi) to the E Leon, Nicaragua, 46 km northwest of Managua, Managua Info
Monday, March 18, 2024 GMT (1 quake)
Mar 18, 08:35 am (Managua)
Mar 18, 14:35 GMT
1.5

10 km
1.4 km (0.9 mi) to the NW 0 Km al sureste de Volcán Cerro Negro, Nicaragua Info
Saturday, March 16, 2024 GMT (1 quake)
Mar 16, 10:17 am (Managua)
Mar 16, 16:17 GMT
2.4

5 km
28 km (17 mi) to the S 6 Km Al Norte De Puerto Sandino, Nicaragua Info
Thursday, March 28, 2024 GMT (1 quake)
Mar 28, 04:39 am (Managua)
Mar 28, 10:39 GMT
0.9

2 km
19 km (12 mi) to the NW Nicaragua, 20 km north of Leon, Leon Info

Background

The 30 km long Las Pilas volcanic complex is built along a N-S-trending fracture system and contains numerous young cones, craters and maars.
The lake-filled Asososca maar is located next to the conical 818-m-high Cerro Asososca cone on the southern side of the fissure system, south of the axis of the Marrabios Range. 2 small maars west of Lake Managua are located at the southern end of the fissure.
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Sources:
- Bice, D.C., 1980, Tephra stratigraphy and physical aspects of recent volcanism near Managua, Nicaragua: Ph.D. Dissertation, Univ of California, Berkeley, 422 p
- Smithsonian / GVP volcano information

Eruptions of Las Pilas volcano



1994 possible phreatic eruption
A possible small phreatic eruption could have occurred at Las Pilas volcano in early 1994. A dense white steam plume was visible on 3 March from at least 10 km south of the volcano.
Geologist visiting the area found a new(?) circular, 10 m diameter pit crater on the upper southern slope of the main crater as the source of the plume. The pit had vertical walls covered with sulfur deposits. 50-75 m to the W, another larger circular pit crater measuring about 30-40 m in diameter was observed.
(Source: Smithsonian / GVP monthly reports)

Latest satellite images

LasPilas satellite image sat1LasPilas satellite image sat2
Sketch map of the El Hoyo volcanic complex and Cerro Negro. After Bice (1980).
Sketch map of the El Hoyo volcanic complex and Cerro Negro. After Bice (1980).

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