Arenal Volcano Rainforest & Natural History Tour – Twilight Arenal Volcano Hike This is the quintessential Arenal Volcano tour to do when you’re in La Fortuna! The Arenal Volcano Rainforest & Natural History tour takes you through lush rainforest along the base of Costa Rica’s most-famous, active volcano. Our experienced, bilingual naturalist guide will show you the amazing Tabacon Lagoon point out interesting plants and wildlife in the vibrant primary and secondary rainforest of the Arenal Volcano Ecological Park nature reserve. You’ll then arrive to the observation point of the Arenal Volcano — this is the closest you can get to the base of the Arenal Volcano — and the perfect vantage point to take remarkable photos as the sun sets behind the Arenal Volcano. If you’re lucky, you’ll also be able to hear or see gas and ash eruptions come out of the top of our behemoth Arenal Volcano!