Bulge lake is accessible through portages to Silver Lake and Dogtrot Lake. Built in c.1830, it is a rambling house started as an open dogtrot. The structure was built with poplar logs in a dogtrot configuration. The house is a dogtrot built in 1905 by Jim Lockeby. The smaller dogtrot came to be used as housing for slaves. Secondary characteristics of the dogtrot house includes placement of the chimneys, staircases, and porches. The plantation house at Roseland Plantation began as a dogtrot house in 1835. The cabin is a two-story "dogtrot" cabin constructed of hewn poplar logs with dovetail notching. Architects continue to build dogtrot houses using modern materials, but maintaining the original design. The Sam Houston Memorial Museum in Huntsville, has two dogtrot cabins. The central structure is the 1877 Refeld-Hinman dogtrot house. The Museum of West Louisiana in Leesville includes the Alexander Airhart Home, a dogtrot house. The town of Dubach in Lincoln Parish, has several surviving dogtrot houses. In the 1880s the dogtrot corridor was enclosed and the house was extended. This dogtrot was originally a log cabin, but was later covered in clapboard.