Thunderclump A fat little fellow from Thunder Mountain Dunderklumpen lives all alone in the mountains of Jämtland. One Midsummer's Eve when he feels very lonely he sets off on a journey to find friends. Details Casts Videos Galleries Posters Title Thunderclump Release Date 1974-09-26 Runtime 01 Hours 37 Minutes Genres Adventure Animation Family Music Fantasy Production Companies GK-Film Studio AB Production Countries Sweden Beppe Wolgers... Self... Jens Wolgers... Self... Halvar Björk... Dunderklumpen / Jorm (voi... Håkan Serner... Lionel (voice)... Gösta Ekman... Dummy (voice)... Toots Thielemans... Pellegnillot (voice)... Lotten Strömstedt... Doll (voice)... Sif Ruud... Elvira Fattigan (voice)... Birgitta Andersson... Blomhåret (voice)... Stig Grybe... One Eye (voice)... Hans Alfredson... Bee (voice)... Kerstin Dunér... Self... Bert-Åke Varg... Old House (voice)... Camilla Wolgers... Camilla... Dunderklumpen! (1974) - Trailer [in English] (Trailer) Original Size (1280x720) Original Size (2000x3000) Original Size (1000x1500) Original Size (1000x1500) Original Size (600x860) Original Size (740x1110)