The Sandwind Observatory was built to observe sandwind, a unique wind disaster in the Eternal Mountains.
Magic sand carried on the wind restricts human activities.
I've discovered that Ironwing Condor Feather in Eternal Mountains carry energy that resists sandwind.
I've set traps to collect Ironwing Condor Feathers, but Whirlwild Lion Lizards destroyed them.
Go to the south of the Observatory and kill Whirlwild Lion Lizards. Gather any Ironwing Condor Feathers you see!