Much like the base version of Horizon Forbidden West, The Burning Shores DLC features special puzzles known as Relic Ruins. Well, technically, it only features one of them, but solving the Murmuring Hollow Relic Ruins can be every bit as enjoyable as any of the rest. As usual, doing so will reward players with a special ornament for their troubles, which they'll then be able to take to Stemmur in Hidden Ember for a special light display.