The Yellow Route: The Observatory is a free hiking itinerary in Sierra Nevada (free access), ideal for those who want to tour the mountain without a guide and without the need for a ticket, enjoying open landscapes, high mountain wetlands and one of the most unique points in the environment: the hill where the Sierra Nevada Astronomical Observatory is located. considered the highest observatory in Europe.

The route starts from the Borreguiles area and ascends towards the Collado de la Laguna, a natural pass that marks a change of slope and opens a panoramic view of the Monachil river basin, with Borreguiles in the background. This section is especially interesting because it coincides with the divide between the Natural Park and the Sierra Nevada National Park, and also with the municipal boundary between Monachil and Dílar, which makes the route a small geographical "viewpoint" of the area.

As you advance along the itinerary, the trail enters the valley of the Dílar River, crossing areas of great ecological value associated with the borreguiles: humid high mountain pastures that appear at the head of the river and stand out for their biodiversity. In a few minutes of walking, it is already possible to observe one of the most representative sheep surfaces in the environment.

The route continues until it reaches the Laguna de las Yeguas, already within the scope of the National Park, a key enclave of the glacial landscape of Sierra Nevada. From here, the itinerary culminates on the hill of the Sierra Nevada Astronomical Observatory and also allows you to locate, at a greater distance, the Sierra Nevada Radio Telescope, recognized by its large antenna of 30 meters in diameter.

📌 Access
The route can be done with access by Borreguiles cable car (for a fee), or without ski lifts through Hoya de la Mora, depending on the plan of each visitor.

Yellow Route: The Observatory (Sierra Nevada)

Free hiking route from Borreguiles to the hill of the Sierra Nevada Astronomical Observatory, passing through the Laguna de las Yeguas and the Collado de la Laguna.