In Wuthering Waves, the Sonance Casket: Ragunna, a valuable item containing fragmented memories, can be found in Rinascita. These can be easily collected using the Grapple Utility.
Trade your Sonance Caskets: Ragunna with the Tweensy Weensy merchant in the Garden of the Lost for rewards like Astrite, Casket Sonnar Use Permit: Rinascita, Resonance Potions, Energy Cores, Plushie Village Restoration Logs, and Shell Credits.
Thessaleo Fells Sonance Casket: Ragunna Locations
Here's a guide to locating all 16 Sonance Caskets: Ragunna in Thessaleo Fells:
Location #1
Northeast of the Rinascita-Ragunna-Thessaleo Fells Resonance Nexus.
Location #2
Teleport to the northern Rinascita-Ragunna-Thessaleo Fells Resonance Beacon. Head west towards the "Dream Patrol: Sprawling Scarlet" challenge, climb the wall, and jump to collect the casket.
Location #3
From Location #2, use your Wingray to fly to the top of the Resounding Rise Tower.
Location #4
Fly from the Resounding Rise Tower to the Twilight Rise Tower; the casket floats above.
Location #5
Fly from the Twilight Rise Tower towards the Command Rise Tower bridge.
Locations #6 & #7
Inside the Command Rise Tower. Accessible during or after the "Shadow of the Towers: Command Rise" Sub-Quest.
Location #8
After completing the "Shadow of the Towers: Command Rise" Quest, fly or climb down from the Command Rise Tower's peak.
Location #9
Teleport to the Twin Peaks southern Resonance Beacon.
Location #10
Go to the bridge, jump off, and glide under to collect the casket.
Location #11
West of the Ragunna-Thessaleo Fells-Twin Peaks northern Resonance Beacon.
Location #12
From Location #11, move southwest, jump off the cliff, and proceed to the golden-winged horse statue.
Location #13
Fast travel to Porto-Veno Castle and collect the casket from its top (use the Grapple Utility or climb).
Location #14
Go to the Resonance Beacon west of Porto-Veno Castle, then northwest towards the "Dream Patrol: Auto Handpuppet" challenge.
Location #15
Teleport to the Ragunna-Thessaleo Fells-Garden of the Lost Resonance Beacon. It's above the Teensy Weensy Plushie merchant.
Location #16
Southeast of the Twin Peaks northern waypoint. Teleport, jump off the cliff, and glide towards the broken bridge.
