The rock was used to watch out for migratory whales passing off the Basque coast before they became extinct in this area, with the watchers notifying the whalers from Donostia of their presence by means of a bonfire.
The rock was used to watch out for migratory whales passing off the Basque coast before they became extinct in this area, with the watchers notifying the whalers from Donostia of their presence by means of a bonfire.