Roca Remolinos

[1] The rock composition varies: four different horizontal layers have been identified, all of which are made of combinations of sand and silt cemented by ferric oxide.

[3] The uppermost 40 m is a caprock layer made of medium to fine sandstone and is tuffite.

[3] When there are strong tidal currents in Chacao Channel the rock creates eddies, drawing objects to it.

Roca Remolinos was studied by Chilean Navy officer Francisco Hudson in the 19th century.

[3] Before the final decision, Roca Remolinos was investigated for its capability to support a tower.

Platform built on top of the Roca Remolinos during the ongoing construction of Chacao Channel bridge . Picture from January 2019.
Sketch of Chacao Channel Bridge according to Diario Concepción . [ 7 ]