There was no need for silence or caution now; and yet, as they stood about the squat and ugly figure, which, in spite of its hideousness, was worth a fortune intrinsically and as an antique, they heard from the direction of the stone passage a noise.

"What is it?" asked Tom Swift.

There was a murmur of voices.

"Indians!" cried Professor Bumper, recognizing the language—a mixture of Spanish and Indian.

The cave was illuminated by the glare of other torches which seemed to rush forward. A moment later it was seen that they were being carried by a number of Indians.

"Friends," murmured Goosal, using the Spanish term, "Amigos."

"They are our own Indians!" cried Tom Swift. "I see Tolpec!" and he pointed to the native who had deserted from Jacinto's force to help them.

"How did they get here?" asked Professor Bumper.

This was quickly told. In their camp, where, under the leadership of Tolpec they had been left to do the excavating, the natives had heard, seen and felt the effects of the storm and the earthquake, though it did little damage in their vicinity. But they became alarmed for the safety of the professor and his party and, at Tolpec's suggestion, set off in search of them.

The Indians had seen, passing along the trail, the uprooted trees, and had noted the footsteps of the explorers going down to the stone passage. It was easy for them to determine that Tom and his friends had gone in, since the marks of their boots were plainly in evidence in the soft soil.