Lego Fortnite: Guide to Finding and Using Brightcore, Copper, and Ruby

Players must venture into 'dry valley' caves in desert biomes to find these valuable resources, crucial for midgame progression.

Brightcore, copper, and ruby are valuable resources in Lego Fortnite, found only in 'dry valley' caves within desert biomes.
Players need to prepare for the extreme heat in these caves by crafting a cool-headed charm and Snowberry Shakes.
Brightcore, identified by bulbous red-orange deposits near lava, is used to build the metal smelter and craft lighting fixtures.
Copper, found in green and copper-colored lumpy deposits, is used to craft the rare longsword, epic forest axe, rare shovel, and epic knight shield, and to upgrade the crafting bench to epic.
Ruby, found in shiny red deposits, is used to craft the inner fire charm, which keeps players warm in the Frostlands.