"Arenal’s perfect cone rises above rainforest and hot springs in northern Costa Rica; while summit access is closed for safety, Arenal Volcano National Park has excellent trails through old lava flows, forested paths, and volcanic ridge lines—Las Coladas and El Ceibo are popular for cooled lava fields and volcano views—and though it last erupted in 2010 it still emits the occasional gas plume, with nearby La Fortuna providing a convenient base." - Hana Al-Khodairi