The river Lis flows for approximately 40 kilometers before reaching the Atlantic Ocean at Praia da Vieira.
The spring is situated at the foot of the karst mountains of the Estremadura region, which are known for extensive subterranean water systems.
The flow rate of the spring is significantly influenced by annual precipitation levels in the surrounding limestone hills.
The river's water has historically powered watermills along its path toward the Leiria city center.
The site acts as a critical ecological corridor for local flora and riparian fauna in the Leiria municipality.
The Source of the River Lis, known locally as 'Nascente do Lis', is located in Quinta da Fonte Quente in the civil parish of Cortes, Leiria. This location marks the primary resurgence of the Lis River, which emerges from limestone karst formations. The site features a landscaped public garden area surrounding the main spring basin. The water flows from a rock cavity, forming a clear, shallow pool before continuing its course toward the city of Leiria. The area serves as a local recreational space integrated with natural hydrological features. Recent urban interventions have provided pedestrian walkways around the water's edge.
The wooden footbridge overlooking the main spring pool.
Wear footwear suitable for potentially damp or uneven ground near the water basin.
Visit during the shoulder seasons to avoid high summer temperatures if planning to walk the surrounding paths.
Do not attempt to swim or wade in the spring source, as it is a protected water catchment and ecological zone.
Maintain a quiet volume to respect the residential surroundings and local wildlife; do not litter near the spring head.
