Beaches and PoolsCosta BlancaFamily FunHistory & CultureLocal InfoOut & About Out & About at the Coves de Sant Joseph – The Longest Navigable Underground River in Europe. by Loraine Gostling August 21, 2024 by Loraine Gostling August 21, 2024 A journey of a little under 2 hours ( north from Javea) will allow you to embark …