They noted as well that at another, quite famous, stave church in Norway, that of Heddal, also has some Catholic Masses that occur -- only in the summer as the Church is unheatable. I believe Heddal is now in the possession of the Lutheran communion, though it was originally Catholic of course..
Here are some pictures they wanted to share:
(Shrine of St. Mary in Porsgrunn)
(Heddal Stave Church)
(Interior of Heddal)
