The valley runs through the municipalities of Elverum and Åmot as it follows the river Julussa, about 15 kilometres (9.3 mi) east of the village of Rena.

Julussdalen has many historic farms with cabins, mills, and mountain pastures.

[1] The river Julussa flows through the valley, starting from Bergesjøen which is at an elevation of 318 metres (1,043 ft) above sea level, and ending as the Julussa flows into the large river Glomma.

Julussdalen was very important for timber out of the big forests, dating from around the mid-16th century.

The first part of the name "Juluss" is most likely derived from a Norwegian dialect word that means "silent", and the last part "dalen" is the Norwegian word for "valley".