“What kind of a place is it?”
“The cave?”
“No, the island.”
“It seems to be an uninhabited island as far as we could see,” answered Jim.
“Didn’t you discover any signs of people at all?”
“Yes,” replied Jim. “The same sign we saw from this deck. The smoke signal.”
“That cave will bear further investigation. It is certainly very curious,” mused the professor.
“What is?” queried Tom.
“About that smoke on the mountain.”
“What do you think of it?” asked Jim.