The Cameron Bench, a penultimate glacial(?) terrace of the Madison River (which lies just off the west edge of the map), is local base level for the Tolman and Shell creek fans (bottom right of map) but not of the Cedar Creek fan (top right).
Image 12288 is a 944 by 1188 pixel GIF Uploaded:
Provenance USGS topographic data, accessed through DeLorme 3D TopoQuads.
Reuse This item is offered under a Creative Commons Attribution-NonCommercial-ShareAlike license http://creativecommons.org/licenses/by-nc-sa/3.0/ You may reuse this item for non-commercial purposes as long as you provide attribution and offer any derivative works under a similar license.