On Jupukka mountain we find one of the measurement points for the Struve Geodetic Arc, a World Heritage. On a clear day, the view from the grassy summit is excellent. The nature reserve also includes the mire Poronmaanjänkkä with its rich flora. The area is 0.8 square kilometres in size. In the nature reserve it is forbidden to pitch a tent and to drive a snowmobile.
There is a car park, signposted from road 99. The trail to the summit begins at the car park.
Jupukka lies north of the Torne river near the village of Erkheikki, about 10 km northwest of Pajala. The reserve lies right at road 99.