Shard at this location can be found inside dungeon – Zalgaz’s Den, southern Craglron.
Dungeon entrance is easily spotted from a nearby road. Shard inside Zalgaz’s Den is found in northern part of the cave, close to dungeon’s bosses. Although the first part of the dungeon consists of mobs that are not hard to solo, group of mobs close to the shard poses a serious challenge if you plan on taking them on solo. You can perhaps kill the mob closest to the shard and when you get overwhelmed respawn and pick up the collectible.
Zalgaz’s Den Entrance.
Zalgaz’s Den Entrance Map Location.
Zalgaz’s Den Shard Map Location.
Sand Kingdom Moons - Super Mario Odyssey Power Moons