go thru the suntower from the magmoor caverns transport to chozo ruins north. once in the suntower, destroy the war wasp hives cuz it'll get irritating if u dont. look for the runic symbols(use the thermal visor to make things easier). once u found them all, go up the spider rail nd watch out for the oculi. u could destroy them with the super missile but its a waste of missiles. use a small bomb to jump up but u only get one chance cuz the blocks that the rails are on will blow up. they'll com bak but its frustrating after a while. when u eventually get up there, u'll see a chozo ghost. follow it nd u'll fight 3 of them in the sunchamber. once u beat them, the artifact will appear in the remains of flaagra nd also the vines blocking the door will b gone.