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.
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One of the gates of the fortress

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Walls made of sandstone blocks

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Blocks of calcareous sandstone

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Effect of weathering on the rock surface

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Semicircular burrow

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Small burrow mould

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Burrow mould

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Group of burrows on the surface of the stone

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Cluster of narrow burrows