>> http://www.torghatten.no/NO-text/valg.htm
I would recommend a walk up to Torghatten, if you have 2 extra hours before your plane leaves Bronnoysund. If you have more time you can bicycle. You can rent a bike at the Tourist office in Bronnoysund center.
There are of course many other activities in the Bronnoy arrea, it is just a matter of time.
Got off Geco-Topaz the day before and instead of taking the 0650AM flight I extended my stay in town until 0150PM. This was enough time to have a walk in town and grab a taxi to take me to Torghatten (15km totally 420NOK).
17°C up the path to the hole. Easy walk.
Inside the hole, with stairs going down.
Other side of hole, looking out.