"I wonder if it could be Mr. Latimer and Dr. Evans--they may have arrived in Oak Creek sooner than they expected," ventured Eleanor. "We can watch better from this point than anywhere else, and when they pass the Rainbow Cliffs, we can see who they are," now said Polly. So they watched impatiently until the riders came from under the hanging walls of rock, and rode again along the top of the shale that covered a wide area between the ravines and the Cliffs. This great stretch of shale was very treacherous going, as on the both sides were deep gulches, or erosions, made by floods from thaws and storms. An abandoned trail ran quite close to one of these ravines but the land-slides of shale had compelled the people at Pebbly Pit to break out a new and safer trail through the middle of the field. To strange eyes, the old trail on the edge of the gulch, was the harder and easier going, but every one coming to the ranch knew the center-trail to be the one always used. Strangers seldom visited Pebbly Pit, and never without a member of the ranch family, or a neighbor to escort them. When the two horsemen reached the branching of the trails, they halted, and the girls saw them ponder. One man motioned with a hand at the rough trail running over the top of the shale in the middle of the area, but the other seemed to argue that the edge-trail was the best one to take. "Oh dear! I hope they won't take that slippery one!" cried Polly, in tense nervousness. "I wish we could yell and warn them!" exclaimed Eleanor, half-rising from her seat. "They'll never hear us at this distance, but we might run along the top-trail and beckon them to climb up there." "But, Polly, by the time we reach the shale they will be almost at the Rainbow Cliffs," objected Eleanor. "Yes, I know, but it seems awful to sit here and watch them ride over that dangerous road." "To relieve our minds, we can go down as far as possible and meet them when they ride out at Rainbow Cliffs," suggested Eleanor. So the two girls scrambled down from their high point of observation, and started along the rock-ribbed road that led past the Cliffs. They had not gone far along this trail, however, before Polly saw Jeb riding down from the corrals. "If I could only get Jeb's attention, he could ride fast and warn those men of their danger," Polly said, thinking aloud. "Let's both scream at the top of our lungs and see if he can hear us." So the two girls stood out on the edge of a huge bowlder and, making megaphones of their hands, shouted again and again. The depression made by the crater that lay between the Cliffs and the corral, acted as a hollow tube, so Jeb finally wheeled around and tried to locate the call. When he saw the girls, he immediately started to meet them as no one on the ranch would shout that way for fun.