We think it is the way the tie goes up and down
We forgot to say that the previous answer was from Alkiza
Robert:I think is a termical picture and the arrows are the currents.
Queen Elizabeth and Hanna Montanna:We think is a rubbish from the city goes to the sea.
20 million years ago Donostia was full of fens; the sea was farther than is now a day and the river Urumea fall into the sea between the Santa Clara Island and the mountain Urgull.The path of arrows that we can see in the picture is the Path that the Urumea River left many years ago. Isn’t it curious???
Beheko karratuan Iruzkina idatzi ondoren, identitate laukitxoan (Izena/URLa) aukeratu eta zure izena jarri. URL hutsik utzi eta (ARGITARATU).