Urban fossils of Pamplona
Ciudadela
Ezcaba - San Cristobal Stone
Location: walls
Rock: calcareous sandstone
Age: Middle Eocene
Fossils: ichnofossils
Remarks: Weathering makes these fossils face away. Therefore, they are more clearly seen on recently repaired sections or South-facing walls.
Ciudadela
Ezcaba - San Cristobal Stone
Location: walls
Rock: calcareous sandstone
Age: Middle Eocene
Fossils: ichnofossils
Remarks: Weathering makes these fossils face away. Therefore, they are more clearly seen on recently repaired sections or South-facing walls.
One of the gates of the fortress
Walls made of sandstone blocks
Blocks of calcareous sandstone
Effect of weathering on the rock surface
Semicircular burrow
Small burrow mould
Burrow mould
Group of burrows on the surface of the stone
Cluster of narrow burrows