he Peñas Blancas River is fed by the pristine waters of several private cloud forest reserves in Arenal and is surrounded by lush rainforest, natural volcanic hot springs, waterfalls and forested canyons that measure upwards of 700 feet (213 m) in height which makes this river an indisputable scenic adventure. For wildlife viewing in La Fortuna, this is by far the easiest and most unique way to take in the area's spectacular scenery, learn about the area's natural history from your naturalist guide, and simply enjoy a serene day immersed in sublime nature.