Gråkallen[2] is a mountain in the Bymarka area of Trondheim Municipality in Trøndelag county, Norway.

The 552-metre (1,811 ft) tall mountain is located in the Byåsen part of the city of Trondheim.

The summit is covered by an abandoned fenced military installation.

In the summer, the ski runs through the pine forests allow hiking and mountain biking back to the city below.

(It is common in Norway to compare mountains with old men.