From the Center of the Earth

Arenal is the most active volcano in Costa Rica. It can erupt up to 20 times a day but sometimes it won't erupt for days. Arenal is a perfect example of the the luck we had in Costa Rica, almost missing buses, but not, having full days of sun on the beach in the raining season, finding free hot springs and streams when others paid 70 dollars, and hearing and seeing Arenal erupt four times when we were there. Usually an eruption consisted of a poof of smoke and a loud rumbling sound. But once I saw a little flash of red at the top. Molten rock is a magical thing.