The 'reventón' phenomenon occurs when heavy rainfall causes the cave mouth to erupt with massive volumes of water suddenly.
The park contains the Sima de la Sima, which at over 100 meters deep, is one of the most significant vertical shafts in the region.
The limestone formations date back to the Jurassic period, having been shaped over millions of years by tectonic activity and water erosion.
The site serves as a vital refuge for the Spanish ibex and the golden eagle.
The cave system exploration is strictly regulated and requires specialized permits for professional speleologists due to extreme geological danger.
Parque Natural de Los Calares del Mundo y de la Sima is a limestone karst landscape situated in the Sierra del Segura of Albacete. The park's primary feature is the Nacimiento del Río Mundo, where water emerges from a cave mouth at 100 meters high to form a multi-tiered waterfall. The landscape features deep chasms and sinkholes, characteristic of the 'Calares' geological formation. It spans over 19,000 hectares, encompassing diverse ecosystems including Mediterranean scrubland and coniferous forests. The cave system is highly complex, with extensive underground galleries and hydrological systems. The area is protected to preserve its unique karst topography and endemic flora, such as the Saxifraga cintrana.
The designated wooden observation deck overlooking the waterfall basin.
Check official hydrological reports before arrival, as the waterfall volume varies drastically based on seasonal precipitation.
Wear footwear with high-grip soles, as the mountain paths become slippery and rocky near the waterfall basin.
Plan for cooler temperatures at higher altitudes, even during summer months.
Attempting to climb the steep rock faces near the cave mouth or entering the cave system without local authorization.
The parking area near the Los Chorros waterfall is subject to strict capacity limits and may close during peak holiday periods.
Stick to marked trails to protect the delicate karst ecosystem; off-trail hiking is prohibited to prevent erosion.
