Dark blue arrows point to two examples of cols on the topographic map to the right. Contour lines on either side of the cols
are highlighted dark blue to make the shape of those contour lines easier to see. Red lines identify the back edges of cirques.
The boundary separating one cirque from another cirque forms an arete, a narrow steep ridge. A col is a low spot on that ridge.
Narrow elongate closed contour lines define ridges on topographic maps whether the ridges are aretes or not. Low spots on the ridges,
in this case cols, occur where the contour lines on either side of the low spot bend, or point, toward the col. The contour lines
that bend toward the low spot have been highlighted in dark blue so that it's easier to see which way the contour lines bend. The
arrows point to the actual cols. The northwestern col is called Mc Henrys Notch and the southeastern col is called Stone Man Pass.