Greece's river to the 'underworld' now lures adventure travelers
Acheron, the mythical waterway to Hades, is popular for birdwatching, river trekking, and zip lining. Is it sustainable?
Perifereia Peloponnisou Ionian Sea Oceans General Perifereia Ipeirou Perifereia Notiou Aigaiou Giorgos Bitzios
Source: nationalgeographic.com