After climbing for two hours more, Noddy wrinkled his nose and twitched his sensitive ears. "Noddy scents water. See, Choko is acting the same way," called Polly; and sure enough both burros were making faces at the sky-line. In a short time the riders reached another Park but this one was not half the size of the first. Instead of encircling forest trees, the girls saw giant up-thrusts of rock that deft the blue sky. On each side of the widened trail stood lodge-pole pine that ran up to the summit and down the other side of the peak. "At last--Top Notch Trail!" exclaimed Polly. "You seem relieved?" ventured Anne. "I am, because I half-doubted whether I would remember the right route without an older guide." "When in doubt don't do anything," suggested Eleanor. "If we didn't do anything we wouldn't have been up here," argued Anne. "This trail runs straight to Grizzly Slide, a glacial peak I've always wanted to see. Father never had time to take me and mother wouldn't allow me to find it alone. Explorers say it is a permanent glacier that seldom changes its form as most of our other snow-capped peaks do in summertime." "How I'd love to see it!" sighed Eleanor. "It sounds as if we were in Switzerland about to visit the Alps," added Barbara. "Have you any plans for to-day, Polly?" asked Anne. "Nothing particular. I thought we would try for this trail and have dinner up here, then do whatever you liked before starting for home." "How long might it take to ride along the top and hunt for Grizzly Slide?" asked Eleanor eagerly. "I'm not sure of the distance, although I hear it is four miles from Four Mile Blaze. From here to the blaze may be one or ten miles, but the going is fine on this trail," replied Polly, eagerly showing her inclinations. "I simply won't consider going back home yet!" declared Eleanor. "We might go on a bit further before eating, and then we can see what the trail is like. If we decided to try for the Grizzly Something-or-other Poll mentioned, I'll agree, all right!" ventured Anne, the gleam of adventure shining in her eyes. "I'm the only molly-coddle in the crowd and I'd like to see more of this mountain, myself," laughed Barbara. "'Nuff said,' when Barbara talks like that!" laughed Eleanor. So they continued along the crest of the mountain from which grand views of distant peaks and vast forest-sides could be seen. The brilliant hues of wild flowers, everywhere, mottled the ground; the dark-green of towering pines, or again the shorter aspens like pickets on guard in the foreground; the bleached skeletons of lodge-pole pine burnt clean in forest fires; and just before the riders, the plunging water falling from a cliff that shut out any glimpse of the trail ahead, combined to produce a master-piece of Nature's work. "Why not camp at those Falls for dinner?" asked Eleanor. "Good idea--I'm half-starved," admitted Anne. "And maybe the horses can rest, too," from Barbara.