Kätkätunturi fell is in Kittilä, close to Levi resort. I made a day hike to the top last week in mid September. The weather was a bit rainy and moist and visibility only a few tens of meters. There were no views from the top but mist brought colors and landscape out in quite a fine way.
Autumn colors on trees were almost gone already but colors on the ground were not still in full bloom. The yearly “ruska” autumn colors season was going on, there were quite many people on trails and at the fire site on the top. Quite many hikers were using nordic walking poles which come very handy especially on the steep ascend from the top.
There are many trails around and to the top of the fell. Some of the trails are suitable for biking. You can hike or bike from Kätkä fell to other fells nearby, or to Pallas-Yllästunturi national park which is about 10 kilometers away.