A3

Pedras Boroas da Landeira

Description

The Pedras Boroas (cornbread rocks) of Landeira are granite geoforms like a boroa (corn bread). They are the result from differential erosion that granite has suffered, leading to the formation of a network of polygonal cracks in the eroded rock parts, resembling to the naked eye the surface of a boroa, so the rock was named after that. In Landeira, erosion split in half a granite block forming two half boroas, an even side by side, almost asking for a grilled sardine. The erosion that produced this curious phenomenon is the result of large thermal amplitudes that are felt at this location. The Pedras Boroas of Landeira are located in the valley of Landeira stream abruptly drawn on the mountainside of Arada.

Natural Patrimony

The valley of Landeira, where the boroa stones are, is a wild and remote place with well-developed forests in which the iberian wolf sometimes takes refuge. The rocky arid mountain top is a very interesting habitat for species such as the colorful common rock thrush, the snub-nosed viper or the wall brown butterfly. Along the water lines we can find the rare cyclamen-flowered daffodil and the tutsan.

Geological and Cultural Patrimony

The abundant granite monoliths in this region multiply in a multitude of curious landforms that dot the land scape. The valley of Landeira high lighted the tectonic Landeira fault, ripping the Arada mountain towards N-S to devise an almost perfect straight. On the left hillside of the river, the village of Landeira perches up high, drawing a tracery of irrigation sulcus fed by abundant waters of these places.

Localization

Santa Cruz da Trapa

Technical information

  • Level of Dificulty Low
  • Type of Route Linear
  • Access Pedestrian access, Car