Shadow Lakes, Oregon Territory, 1859

A.-- Deep cut, 30 ft., Road condition, thin gravel on dirt, inclined to be muddy when wet, 12 ft. wide;

B.--Wooden Bridge, heavy support timbers, suitable for field artillery, cavalry, and infantry, 10 feet wide, weak railings;

C.--Rocky, uneven road surface, will be problematic with artilery and heavy wagons (10 ft. wide);

D.--Fresh water, no detectable alkalines, shallow, deepening to (0-30 ft.), beyond the dotted line very deep (exceeds fifty ft. in depth);

E.--Shallow Lake, max. depth, 40 ft.;

F.-- Max grade 6 degrees;

G.--The walls of the lake are mostly Basaltic Rock with shale, and some brush.