Sagaholm
From Zoophilia Wiki
The Sagaholm in present-day Sweden had a large barrow from the early Nordic Bronze Age. It had a circle of slabs of sandstone, probably as many as 100. Only 45 remain, but 18 of them are adorned with petroglyphs depicting ships, animals and people, including scenes of zoophilia.
The find is today at display in the museum of Jönköping, Sweden.