Here is some of the wildlife I encountered on the main trails at Rincón de la Vieja National Park in Guanacaste, Costa Rica.
My travel party started hikes at both the Pailas Station and the Santa Maria Station. You can hike between them, but we didn’t do this. If I had to pick one side, it would be Santa Maria. There are more volcanic features there, but trust me, the terrain is very interesting on the Pailas side especially if you hike far enough. The vegetation changes dramatically and there are very interesting clearings surrounded by rainforest. The road to Santa Maria Station is a little rougher and the terrain is moon-like.
My travel party was lucky enough to encounter a huge troop of White Capuchin Monkeys in the late afternoon. They were foraging across the canopy, but when my father and I started photographing them, they became very curious about us. I took with me a massive Nikon 200 – 400 mm lens.
A Black Iguana. This guy was very active.
Tiny green snake.
Of course, Rincon de La Vieja is a volcano too. Hiking on the rim is prohibited now, but you still get to see plenty of geothermal cauldrons boiling with mud.
There are pools and streams running white with what I assume is sulfer.
There are plenty of crystal clear steams and waterfalls too.