Complex sentence: Even though it is not among the highest peaks in Norway with its 1,564 m it is rated among the top ten mountain walks in Norway, largely due to its beauty, view and the fact that it's rising directly from the fjord.
Split into simpler sentences: Even though it is not among the highest peaks in Norway, the tall mountain is rated among the top ten mountain walks in Norway. This is largely due to its beauty, view, and the fact that it's rising directly from the fjord.