Right on this trail =1 m.= at the end of a small valley are the BURNING COAL MINE and the COLUMNAR CEDARS. Across the ravine on a hillside sloping to the W. is the burning mine, which at dusk casts a carmine glow over the hill, and a heavy odor of coal gas hangs in the little valley. How long the lignite bed has been burning underground is not known. The Indians have legends telling of the burning ground, and old settlers in the region say that the burned area has not advanced more than a few hundred feet in the 50 years since the region was first settled by white men. The cause of the combustion is not known. As the coal burns underneath, the earth overburden crumbles and falls, taking with it all rocks, trees, and vegetation on the surface, leaving in its wake red scoria and other less brightly colored clays. The burned area succumbs easily to weathering and erosion. From large crevices in the earth intense heat pours, but with care one can peer into the flaming underground pits. (_Approach from the downhill side where there is no danger of the earth crumbling underfoot._) In the bottom of the tiny valley, and on its western slope, grow the columnar cedars, bright green conical trees averaging 15 ft. in height. These trees, found in North Dakota only in this small area adjacent to the burning mine, taper from a large base to a narrow tip. Their brilliant green forms a decided contrast with the dull grays and tans of the hills surrounding them. On the main side road beyond the junction with the trail, the dirt graded road winds down to the Little Missouri and upstream to the SITE OF A LOGGING CAMP, =15 m.= When the N. P. Ry. was, being built W. of the Missouri a wood cutters' camp was maintained here. The camp bunkhouse is said to have been equipped with loopholes to shoot through in event of Indian attack. The cedar ties and pilings cut at the camp were floated down the Little Missouri, but many became snagged in sand bars or scattered over the river flood plain, and few reached their destination. Across the river from the site are the two peaks known as the RABBIT'S EARS. US 85 at =229 m.= passes directly between Chalky Butte (L) and Black Butte (R). At =230.5 m.= is a junction with a dirt road.