The name gold (gull) does not refer to the color, but rather to gul, an old word for a strong wind. Gullfjellet is a popular destination for cross-country skiing in the winter and for hiking in the summer.
There are many different trails to follow on the mountain, and most of them are marked by cairns. If you do decide to hike here, be aware that the mountain is very weather exposed and that the weather can change very quickly. Large areas of the mountain are without mobile coverage. At the Redningshytten cabin, you will find an emergency radio telephone if you should need assistance.
The best way to reach the peak of Gullfjellet is by taking buss 925/930 to Gullbotn (35 minutes), and walk from there.