The 120-mile-long Peca­ton­ica River, as well as its 50-mile East Branch, orig­i­nate in and flow through south­west­ern Wis­con­sin, where rem­nants of oak savanna and tall­grass prairie pro­vide glimpses of pre-settlement Wisconsin.

Yel­low­stone Lake State Park

Yel­low­stone Lake State Park is in the drift­less area of south­west Wis­con­sin. This 1,000-acre park, with an addi­tional 455-acre lake offers vis­i­tors ample space to enjoy camp­ing, swim­ming, fish­ing, boat­ing, hik­ing, bik­ing and pic­nick­ing. In win­ter the park is open to ice fish­ing, snow­mo­bil­ing and cross-country skiing.