2018 fall western trip, Oregon, Four-in-One Cone trail west of McKenzie Pass on highway 242 and west of the town of Sisters. View looking north from Four-in-One Cone of only volcanic material (ash, lava, cinders...) including Mt Jefferson, Three-Fingered Jack, and Mt Washington (right to left). The picture does not show Mt Hood but on the cones it is faintly visible on the right side of Mt Jefferson. Moderately difficult trail but lots of volcanic stuff. See Sullivan's "Central Oregon Cascades" hiking book.