Wreckage
From GuildWiki
Piles of Wreckage can be found in post-searing Ascalon.
Essentially they function as an unlocked chest (similar to Hidden Stashes in Pre-Searing), i.e. if you run up to them and (double)click them, the "container" will pop open and usually reveal some random loot.
For example: Wrecked Catapults scattered throughout the Fort Ranik (mission) contain common crafting materials like:
