林道
H-13 is a county-designated highway in the Upper Peninsula of the US state of Michigan that runs north–south for approximately between Nahma Junction in Delta County and the Munising area in Alger County. The highway is also signed as Federal Forest Highway 13 (FFH-13), a Federal Forest Highway between Nahma Junction and Wetmore. The roadway runs through rural national forest lands providing access to several campgrounds and parks. The area contains several lakes as well. The Forest Highway System dates back to the 1920s, and an earthen roadway was present along the route of FFH-13 by the 1930s. It was paved by the late 1940s and added to the county-designated highway system in the 1970s. A section of H-13 in Alger County originally continued north to Miners Castle, but the roadway designation was truncated in the first decade of the 21st century.