Get our newsletter!
Check out the volcano tours offered by Volcano-Adventures!
Volcanoes & Earthquakes - new app for Android
Guaranteed tours:
13-21 May: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
20-27(28) May: Fascination Volcano - Santorini Island (Greece)
29 May - 3 Jun: Aegean's Hidden Gem: Isle of Milos - Milos Island (Greece)
3-18 Jun: From Krakatau to Bali - Java (Indonesia)
4-11 Jun: Nyiragongo Lava Lake & Mountain Gorillas - DR Congo + Rwanda
10-18 Jun: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
8-23 Jul: From Krakatau to Bali - Java (Indonesia)
10-14 Jul: Adventure Volcano - Yasur Volcano Travel - Tanna Island (Vanuatu)
10-24 Jul: Volcanoes in the South Sea - Vanuatu (South Sea)
14-23 Jul: The Volcanoes of Ambrym - the Grand Traverse - Vanuatu (South Sea)
: spaces available / : guaranteed / : few spaces left / : booked out
Random pictures
Latest news from Poas volcano:
Sunday, Apr 23, 2017
Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ... [more]
Beginning of the explosion at Poás last night (image: RSN)
Sunday, Apr 23, 2017
A loud and strong explosion occurred Saturday night (22 April 2017) at 22:12 pm local time from the crater. ... [more]

Poas volcano

Stratovolcano 2708 m (8,884 ft)
Costa Rica, 10.2°N / -84.23°W
Current status: erupting (4 out of 5)
Poas webcams / live data
Poas volcano books | Tours
Last update: 23 Apr 2017
Typical eruption style: Phreatic eruptions, sometimes geyser-like ejections of water from the acid crater lake.
Poas volcano eruptions: 1828, 1834, 1838(?), 1860, 1879(?), 1880, 1888-91, 1895, 1898-1907, 1910, 1910, 1914, 1914-15, 1925, 1929, 1941-46, 1948-51, 1952-57, 1958-61, 1963, 1964-65, 1967, 1969, 1970, 1972-73, 1974-75, 1976, 1977, 1977-78, 1978, 1979-80, 1980, 1981, 1987-90, 1991, 1992, 1992-93, 1994, 1996, 2010, 2011, 2012, 2013, 2014, 2016, 2017
TimeMag. / DepthDistanceLocation
Tue, 25 Apr
Tue, 25 Apr 18:39 UTCM 2.7 / 97 km4 km7 km al Este de Carrizal, Alajuela.
Tue, 25 Apr 18:27 UTCM 3.6 / 5 km2 km6 km al Oeste de Varablanca, Heredia.
Sun, 23 Apr
Sun, 23 Apr 04:12 UTCM 3.6 / 1 km4 km8 km al Noroeste de Varablanca, Heredia.
Sun, 23 Apr 02:32 UTCM 3.0 / 2 km2 km7 km al Oeste de Varablanca, Heredia.
Sun, 23 Apr 02:28 UTCM 2.9 / 3 km4 km8 km al Noroeste de Varablanca, Heredia.
View all recent quakes
Poás is one of Costa Rica´s most active volcanoes, and one of its most frequently visited and prominent ones. It contains a green acid crater lake and during some of its frequent phreatic eruptions, water from the lake is ejected like a geyser.

Background:

The broad, well-vegetated edifice of Poás has three craters in a N-S line. The 2708-m-high basaltic-to-dacitic complex stratovolcano is cut by a N-S-trending fissure that extends to the lower northern flank, where a parasite volcano (the Congo stratovolcano) and several explosion craters, or maars, most of them lake-filled, have been created.
Poás has two summit crater lakes. The southermost one, Botos, is cold, clear has not eruptied for about 7500 years. The other crater lake is geothermally heated and -after Kawah Ijen in Indonesia - is probably the world's second most acidic natural lake. Its pH is near zero.
---
Source: GVP, Smithsonian Institution

Poas Photos:




Latest satellite images


More on VolcanoDiscovery:

 
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Text and images on this webpage are copyrighted. Further reproduction and use without authorization is not consented. If you need licensing rights for photographs, for example for publications and commercial use, please contact us.