The following quotation may refer to rock-slide pits:[421] "In the eastern part of Marion County, Oregon, there stands an isolated and most strikingly regular and beautiful butte some three hundred feet in height and covering nearly a section of land. It was fringed about its base, at the time of which I write, with fir groves, but its sides and well rounded and spacious top were devoid of timber, except a few old and spreading oaks, and perhaps a half dozen gigantic firs, whose weighty limbs were drooping with age. A meridian section line passes over the middle of this butte, and four sections corner near its top. While running this line and establishing these corners in 1851, I observed many semi-circular walls of stone, each enclosing space enough for a comfortable seat, and as high as one's shoulders when in a sitting posture, upon cross-sticks as high as the knee ... the older white residents said the Indians made them, but for what purpose they could not say. I became a witness to the use, and was particularly impressed with the fitness for what I saw. Indians from the North and South traveling that way generally camped upon the banks of the Abiqua Creek, a rapid stream of pure, cold water, just issued from the mountains upon the plain. The butte was near, and this they ascended and, taking seats within the stone sanctuaries, communed in silence with the Great Spirit. Bowing the head upon the hands and resting them upon the knees for a few moments, then sitting erect and gazing to the west over the enchanting valley interspersed with meadow, grove and stream." The author states that the place is now called Mount Angel, is surmounted by a Roman Catholic cathedral and that the Indians called this butte Tap-a-lam-a-ho, signifying Mount of Communion; and the plain to the west Chek-ta, meaning beautiful or enchanting. [421] Pp. 35 and 36 of an article entitled "Extract from T. W. Davenport's, Recollections of an Indian agent (not yet published)." The Quarterly of the Oregon Historical Society, March, 1904, Vol. V, No. 1.