The rocks on that portion of Soroe appeared to have split violently asunder to admit some great in-rushing passage of the sea, and were piled up in toppling terraces to the height of more than two thousand feet above the level of the water.

Beneath these wild and craggy fortresses of nature a shining stretch of beach had formed itself, on which the fine white sand, mixed with crushed felspar, sparkled like powdered silver.

On the left-hand side of this beach could be distinctly seen the round opening of the cavern to which Valdemar Svensen directed their attention.

They decided to visit it--the yacht was brought to a standstill, and the long-boat lowered.

They took no sailors with them, Errington and his companions rowing four oars, while Thelma and her father occupied the stern.