Access to Covão do Sabugueiro coming from:

- Alcanena (± 18.5 km) by N361, 25 de Abril street, São José street and Principal street (direction Leiria).

- Porto de Mós (± 15 km) by N362 to Serro Ventoso. Follow to Pebada street and Principal street which name changes to Luís de Camões street. Continue to Santo António street.

Access to the doline only on foot. Private property.

GPS: 39.520239, -8.791442

Covões Largos is a small town with mountainous features that owes its name to the fact that it is framed by two sinkholes. The houses, roads and walls difficult the observation of these karst forms. The sinkholes have its bottoms occupied by meadows where cattle graze. Like many others in Estremenho limestone massif these are small soil fertility oasis. The construction of walls, due to the removing of loose limestone blocks from the bottom of the depressions, allowed increasing the area available for agriculture and grazing.

These sinkholes have irregular shape with progressive and gentle slope that connects, in continuity, the inner surfaces with the exterior. The slopes and bottom are covered by terra rossa.

Depression – landform sunken or depressed below the surrounding area.

Doline (also known as sinkhole) - a closed surface depression draining underground in karst landscape. Dolines are usually "bowl-shaped" and can have only a few or many hundreds of meters in diameter.

Geomorphology – part of geology that studies the shapes and the evolution of Earth’s reliefs.

Karst - A distinctive topography that indicates dissolution of underlying soluble rocks by surface or ground water in areas of easily soluble rocks. Characterized by caves, underground drainage and sinkholes.

Terra rossa – Italian expression meaning “red soil”. The terra rossa soil is heavy and clay-rich (silty-clay to clayey) soil, strongly reddish, developed on limestone or dolomite.