Archaic Stone is a strange, rare ore that was mined from The Chasm. It can be found through the World Quest Says He Who Seeks Stone or the Hidden Exploration Objective Muning's Never-Ending Needs, in an underground area.
It can also be found in Crumbling Farum Azula, which is a dragon dungeon near Malenia's Death Site. Once players have fought the dragon, they need to run up some roofs and to the right. When they do, a gazebo appears. After they open it, they'll find a Somber Ancient Dragon Smithing Stone inside.
There are only 8 of these items, and each one is very hard to find. They can only be obtained in a New Game+ save, and once they're used up, there will no more to be found on the map.
The Beaghmore Stone Circles in County Antrim, Ireland are a megalithic complex of 7 large stone circles and over 1,269 smaller upright stones. They were discovered by peat cutters in the 1940s.
They are dated to between 2900 BC and 1200 BC. They also contain a number of prehistoric stone tools, including some flint tools which have been carbon dated to around 3000 BC.
The Beaghmore Stone Circles are a popular destination for history buffs who visit the Isle of Skyrim, and they are definitely worth exploring. However, it is a long trip by motorbike and would be difficult to explore during rainy season.