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Global Volcanism Program | Image GVP-07073

Bosque Alegre maar was constructed about 12 km from Poás along a N-trending chain of vents.  Laguna Hule ("Rubber Lake") at the lower left lies within the 2-km-wide maar complex known as Bosque Alegre ("Happy Forest").  The pyroclastic cone at the right rises about 130 m above the roughly 20-m-deep lake and separates it from Laguna Congo in the NW part of the maar complex.  A pyroclastic-flow deposit from Bosque Alegre maar was radiocarbon dated at about 2730 yrs before present. Photo by Guillermo Alvarado, 1987 (Instituto Costarricense de Electricidad).

Bosque Alegre maar was constructed about 12 km from Poás along a N-trending chain of vents. Laguna Hule ("Rubber Lake") at the lower left lies within the 2-km-wide maar complex known as Bosque Alegre ("Happy Forest"). The pyroclastic cone at the right rises about 130 m above the roughly 20-m-deep lake and separates it from Laguna Congo in the NW part of the maar complex. A pyroclastic-flow deposit from Bosque Alegre maar was radiocarbon dated at about 2730 yrs before present.

Photo by Guillermo Alvarado, 1987 (Instituto Costarricense de Electricidad).


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