From the parking lot, you descend into the Arroyo de La Viñuela valley. This is one of the lushest areas of the park. Due to the stream, you'll find a dense Mediterranean forest here, much greener than the well-known plains ("rañas") of Cabañeros. After about 3 kilometers of walking, you'll pass through an impressive forest of Pyrenean oaks. Some of these trees are hundreds of years old and form a magnificent canopy, creating spectacular colors, especially in autumn. Further along the trail, you climb to a higher elevation via a firebreak. Here, you'll have a breathtaking panoramic view of the Raña, the vast grassland also known as the "Spanish Serengeti." With binoculars, you can often spot herds of deer grazing from here. The trail continues through a dense thicket of strawberry trees (madroños). In winter, they bear red fruit. You'll also walk through a beautiful forest of Portuguese oaks (quejigares), one of the best-preserved specimens in the region. In the sky, you might spot the Eurasian black vulture, Spanish imperial eagle, or griffon vulture soaring on the thermals.