This circular route, which coincides in its first half with the GR-7 and the Fuente Segura Trail (perfectly signposted by the Andalusian Regional Government's Environment Department), runs through the valley between the slopes of the Mariasnal and the rocky soils from Los Corralejos, passing through the villages of Fuente Segura and the source of the Segura River, a spectacular crystalline pool of about 7 m in diameter by 6 m deep, whose state is highly variable depending on the weather of the year.

The water flows through the mouth of a pool that is part of the underground system that collects the precipitation that falls on the nearby plateau of Campos de Hernán Perea.