The Jungle Book by Rudyard Kipling Chapter 7 Page 44

below the cliffs was the mouth of the tunnel.

“It’s Novastoshnah over again, but ten times better,” said Kotick. “Sea Cow must be wiser than I thought. Men can’t come down the cliffs, even if there were any men; and the shoals to seaward would knock a ship to splinters.

If any place in the sea is safe, this is it.”

He began to think of the seal he had left behind him, but though he was in a hurry to go back to Novastoshnah, he thoroughly explored the new country, so that he would be able to answer all questions.

Then he dived and made sure of the mouth of the tunnel, and raced through to the southward. No one but a sea cow or a seal would have dreamed of there being such a place, and