A cave lake whose roof collapsed thousands of years ago, so at midday sunlight drops straight down onto brackish water and the…A cave lake whose roof collapsed thousands of years ago, so at midday sunlight drops straight down onto brackish water and the boat appears to hover in mid-air over a visible bottom 20-30m below. The blue is not an exaggeration. Excavated in 1951, when archaeologists found a 4th-century BC sanctuary to the god Pan on the interior island, clay figurines of Pan and nymphs, and a plate depicting dancing nymphs, are now in the Argostoli museum. The lake is fed by seawater that travels underground from Katavothres on the far side of the island, a flow proven by dye tests in 1963. Anchorage: Anchor in Sami bay, an excellent Ionian anchorage; the cave is a short drive inland. Hazards: No site-specific hazards noted, brief normally. Plus