What interesting traditions.
I once read that in a small town called ålesund every year on June 24, fires are also burning.
Thus, the locals celebrate two holidays at once - Midsummer day (pagan holiday of the summer Solstice) and Christmas of John the Baptist.
I think that the Tradition of kindling fires on the summer solstice
has existed among Norwegians since ancient pagan times.
With the advent of Christianity in your country began to burn such fires.
Thank you for interesting photos, dear @Siggjo
Interestingly, it was someone who mentioned the bonfire in Ålesund when it was commented that this fire of the Viking ship at Rubbestadneset had to be one of the finest in all of Norway.
Many thanks to @Singa for the very interesting comment about the celebration of midsummer in Norway.
You have done a thorough investigation and familiarized yourself with how Norwegians celebrated this event.
So your picture shows that people from Ålesund really make an impressively big and nice bonfire. The link below with Norwegian text has more information about the bonfire in Ålesund about how they build the bonfire.
https://www.vg.no/nyheter/innenriks/i/QlA97Q/aalesund-holder-verdensrekorden-i-st-hans-baal
Thanks for the link. I, of course, also read.
You always have very interesting posts, dear @Siggjo !