"I am here, Dick," answered the girl, her voice seeming to issue from the ground at my feet.  Then, for the first time, I noticed that there was what appeared to be a slight dip in the inner edge of the ledge, but which, upon closer inspection, proved to be a fissure, just wide enough for a man to squeeze through, and it was into this fissure that Lotta had dropped.  I promptly followed her, and presently, when my eyes had become accustomed to the dim twilight of the place, I found that we were in a small, cave-like hollow of the rocky cliff, measuring about eight feet in each direction, and floored with very fine, dry sand.  But of the treasure there was no sign that I could discover, in any direction-- unless it were artfully concealed in one or more of the many small holes or recesses that I saw here and there in the rocky walls.  Lotta observed my perplexity and laughed heartily.