RT @arantxa_tapia: 🏞 The #BasqueCountry is deeply linked to the Earth thanks to our rich geological past. Once under a tropical sea, iron deposits formed under our mountains which fueled our industrial revolution.

Zumaia's Flysch became today one of the #First100Geosites; big milestone. Zorionak!

🐦🔗: https://nitter.eu/IzaskunBilbaoB/status/1585235923846897664