Heddersfjellet is a mountain in Tuddal, Hjartdal municipality. It is the highest mountain between Tuddal and Tinnsjå. The mountain is 1461 meters above sea level. This mountain has an Ice Age rock called Hulderhola or Hulderkyrkja. We visited the rock in June 2022. During the trip, we got into a thick fog, with the help of which we got lost in the mountains. The adventure ended well and left many memories.