What is folgunthur puzzle?

The Folgunthur puzzle is a puzzle located in the game "The Elder Scrolls V: Skyrim", specifically in the Folgunthur ruins. It consists of three gates that must be opened in order to progress through the ruins and reach the final boss. To open the gates, the player must solve a series of puzzles involving rotating pillars, pulling chains, and shooting arrows at symbols on walls. The clues for the puzzles can be found in the surrounding area and require some exploration and careful observation to uncover. The Folgunthur puzzle is considered one of the more challenging and rewarding puzzles in the game.