"Say, that'll be great!" cried Bob. "And we can bring some grub there and cook it! Sammy, you're all right!"

"Even if he can't find the pirate gold!" added Frank, gaily.

Filled with the new idea, the boys hastily rowed up on shore, and soon were digging into the side of the hill of sand, making a place where they could go in and imagine all sorts of delightful things.

The sand dune was one of many along the shore, and on top grew some rank grass that held the sand together. Working with broad pieces of driftwood for shovels, the boys soon had quite a hole in the sand pile. It was large enough to hold all three of them, and they were eagerly talking of the fun they would have.

"We can come over here and stay all night!" said Bob.

"Sure, it will be plenty warm enough, with a blanket or two," added Sammy.

"And we can cook our meals right on the beach, in front of the cave," added Frank. "That's the way the pirates used to do."

"Then we'd better get some driftwood for the fire," suggested Sammy. "We've got the hole almost large enough."

They collected quite a pile of the wood that was strewn along the beach, and then, after sitting in the "pirate cave" for a while, they rowed back to Barnacle Cottage, to get some food which they intended to cook over their campfire that evening.