Celtic and pseudo-medieval mish-mash

According to youtube, this was composed for the Cheftains and the Belfast Harp Orchestra. I like the music quite a lot (well, it's irish), but the montage is utterly kitsch, or quétaine as we say in Québec. Try to identify the different images and/or their origin. We have a few dolmens, some Elves (who drew them I don't know), some Dungeons & Dragons illustrations, a few drawings inspired by Celtic and Viking legends and random pics of forests at different periods of the year. Funny as it shows the clichés associated with medieval times.