The Echo Vaults
Rarity: Uncommon but whispered-about. Scholars from the Verdant Accord theorize dozens exist across the Stoneheart Network, but only a few have been discovered—and fewer still are accessible or intact.
Function: These are semi-sentient magical record-chambers—they absorb and replay echoes of significant events, particularly those tied to the runic infrastructure. They're not deliberately created like libraries; they’re more like magical seismographs that imprint history when intense magic or conflict occurs nearby.