The OrosiValley, southeast of Cartago, is generally considered one of the most beautiful valleys in Costa Rica. The ReventazónRiver meanders through this steep-sided valley until it collects in the lake formed by the Cachí Dam. A well-paved road winds a near-perfect loop around the lake, allowing for easy access to all of the attractions listed below. Scenic overlooks are near the town of Orosi, at the head of the valley, and in Ujarrás, on the banks of the lake.