Arenal, Poás, Irazú...for a tiny country, Costa Rica sure is bursting with lots of volcanoes. And with Arenal, its most famous, in a 'resting phase' since 2010, this Central American eco-mecca's most spectacular show is now being put on by Rincón de la Vieja, in the Pacific Coast Guanacaste province. That includes an active crater along with bubbling mud pits and thermal springs, rivers, and waterfalls. Around all of this are some amazing... keep reading