Highway 58 is an oiled surface provincial highway in the Canadian province of Saskatchewan which handles approximately 100 vehicles per day. It runs from Highway 18 3 kilometres west of Fir Mountain until Highway 1 / Highway 19 near Chaplin in the south-central area of the province. Highway 58 is about long traversing through the Missouri Coteau. There are multiplexes of with Highway 13, with Highway 43, and with Highway 363. The highway's passage through the province offers a diverse sample of Saskatchewan to a traveller, taking in rural villages and towns, the scenery of the Missouri Coteau, Thomson Lake which is a man-made lake for recreational and reservoir purposes, natural lakes such as Chaplin Lake which is the second largest saline lake in Canada. The terrain of the Missouri Coteau features low hummocky, undulating, rolling hills, potholes, and grasslands. This physiographic region of Saskatchewan is the uplands Missouri Coteau, a part of the Great Plains Province or Alberta Plateau Region which extends across the south-east corner of the province of Saskatchewan. Highway 58 runs through the first regional park of Saskatchewan; Thomson Lake Regional Park, and also provides nearby access to Shamrock Regional Park another early regional park of Saskatchewan. The Louis Pierre Gravel National Historic Marker commemorates history at the north end of Highway 58, and the Cripple Creek Provincial Historic Marker is located at the south end. Highway 58 also provides access to the Chaplin / Old Wives / Reed Lakes Western Hemisphere Shorebird Reserve Network, a shorebird sanctuary of international repute and fame. Communities The Wood Mountain First Nations Indian Reserve is located near Fir Mountain and is south of the southern terminus of Highway 58. Historically Sioux Indians traversed this area as they followed Chief Sitting Bull. 37.2 kilometres north is Lafleche first called Buffalo Head. Lafleche is located near Thomson Lake and became a town in 1953. The CPR line came through, in 1913. Mail delivery arrived via train, however this switched to mail truck in 1958. Travelling a distance of 57.8 kilometres is the town of Gravelbourg which is noted for being the Cultural Gem of Saskatchewan. Gravelbourg features the Our Lady of Assumption Roman Catholic Co-Cathedral and at one time was a bustling agricultural centre and hosted nine agricultural elevators. Shamrock Regional Park is south east of Shamrock. 98.5 kilometres from the southern terminus is the village of Shamrock. Travelling 135 kilometres