.

The Island in the Lake.
We made the canoe fast and landed on the great rock, to perceive that it was really a peninsula.

That is to say, it was joined to the main land of the lake island by a broad roadway quite fifty yards across, which appeared to end in the mouth of the cave.

On this causeway we noted a very remarkable thing, namely, two grooves separated by an exact distance of nine feet which ran into the mouth of the cave and vanished there.
"Explain!" said Bickley.
"Paths," I said, "worn by countless feet walking on them for thousands of years." "You should cultivate the art of observation, Arbuthnot.

What do you say, Bastin ?" He stared at the grooves through his spectacles, and replied: "I don't say anything, except that I can't see anybody to make paths here.