Haligtree Secret Medallion (Right) is a Key Item in Elden Ring.
This item is part of Latenna the Albinauric's questline.
Right half of a split medallion depicting the Haligtree.
Brandishing the medallion with both halves conjoined will activate the Grand Lift of Rold, granting access to a hidden path.
In other words, this secret medallion will guide the bearer to the land of Miquella's Haligtree.
Quest: Old Albus[1]. Hit his pot-form to dispell the disguise and talk to him.
Alongside the Haligtree Secret Medallion (Left) of Castle Sol, operates the Grand Lift of Rold to open the path to the Consecrated Snowfield.