"Same as usual. Pick out your beds, then roll up in your blankets,"
directed Dad. "You are used to it, eh?"

"Well," drawled Chunky, "I've slept in a good many different kinds of
beds, but this is the first time I ever slept in a lava bed."

True to Dad's prophecy, the snow came within half an hour.

"Better turn in before the beds get too wet," advised Dad.

All hands turned in. Sleep did not come to the boys as readily as usual.
They had been sleeping in real beds too long. After a time the snow
changed to rain in the warmth of the crater. Chunky got up disgustedly.

"I'm tired of sleeping in the bath tub," he declared. "Think I'll move
into the hall bedroom."

Chuckles were heard from beneath other blankets, while Stacy, grumbling
and growling, fussed about until he found a place that appeared to be
to his liking.

"When you get through changing beds perhaps you will give us a chance
to go to sleep," called the guide.

Stacy's voice died away to an indistinct murmur. Soon after that quiet
settled over the dark hole in the mountain. The rain came down harder
than ever, but by this time the Pony Rider Boys were asleep. They
neither heard nor felt the water, though every one was drenched to the
skin.