Although there are easier routes to the cave, we followed Dieter Graf's book, Walking on Naxos, and hiked up from Filoxi around the side of the mountain. We set off wearing sturdy boots and long trousers and were very glad that we came well prepared. The ascent from the spring to the cave is steep and not for the faith-hearted. Even moving about inside the cave is tricky but definitely worth taking the time to explore, and a torch is highly recommended. Be warned however, should you choose to continue your ascent to the top of Zas mountain, this climb is even more arduous. Good fun though and great exercise. Certainly beats spending another day on the beach.
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