Halfway up the hill between Skala and Hora, this small cave is where St. John the Divine is traditionally said to have received and dictated the Book of Revelation around 95 AD. The cave itself is tiny — barely 20 people fit comfortably — and has been incorporated into a chapel complex that includes the Chapel of Saint Anne above it and a monastery below. The atmosphere is hushed and genuinely affecting; even secular visitors tend to lower their voices.
The cave shows the three-cleft ceiling crack that Orthodox tradition says was made by God's voice. The rock face where John is said to have rested his head while receiving visions is marked with a silver headrest. Monks are usually present and happy to explain the significance of different features. Visit early morning or late afternoon to avoid the groups from cruise ships.