The large barn with hayloft is 36.5 meters long and 8 meters wide, significantly larger than what was common in Målselvdalen in the 19th century. The solid parts are built of log timber with dovetail notches, while the barn section, which should be airy, is built in post construction and boarded with paneling. The gable roof has turf covering. On the long side facing the courtyard, there are two driving bridges to the barn, where the base of the bridges is built of natural stone. The Sandeggen barn originally stood at Øvre Sandeggen in Kirkesdalen and was built in the 1890s. It was in use there until 1964. In 1982, it was dismantled and moved to Fossmotunet. In the summer of 1984, it was completed with interior, driving bridges, and a restored bell tower.

The smithy to the right in the picture is after smith Jon Stengrimsen. He came in the 1850s from Oppdal as a farmhand to Fossmo. He was skilled, and English salmon fishermen took him to England to apprentice as a blacksmith. After returning, he bought Nedre Finbakken and gradually built a combined house for woodworking and smithy. It was moved to Fossmo for the inauguration of the village museum in 1963.

In the foreground stands a stump puller. It was a tool used in clearing land, to loosen both stumps and stones.