Grand Dectus Elevator is a large elevator leading to the new location "Altus Plateau". To activate the elevator mechanism, you need to collect both parts of the Dectus medallion, which opens the age to the plateau.
This article will detail the location of the lift itself and easy ways to quickly find the two pieces of the magic locket.
Where to find the Great Dectus Elevator in Elden Ring
The desired building is located on north of Liurnia. To get started, get to Raya Lucaria Academies, remove the magical barrier from its entrance and clear the building itself. Near the Academy there is a bridge leading to the northern lands. Follow this road and you will soon find yourself in front of the Dectus Tower.
On the way you will meet several enemies - you can kill them or run away from them. Having reached the grandiose structure, you need to light the Place of Grace to the right of the lift in order to save game progress.
How to activate the Great Dectus Elevator in Elden Ring
To activate the elevator, you need to find two parts of the mysterious Dectus medallion. They are hidden in chests in guarded forts, where you will have to fight your way through. After receiving both parts, you need to return to the lift and start it.
Where to find Dectus Medallion Parts in Elden Ring
Both halves are hidden on the tops of the forts. Both fortresses have many different enemies attacking any intruder.
Left side
The left half of the magic amulet is hidden in Fort Haight in the east of the Graveyard, closer to the southeastern part of the Misty Forest. It's easy to get there - just go back to starting area of the game and follow the road leading east.
The entrance to the tower is guarded crossbowmen - they will immediately begin to fire at the character. While dodging the shelling, run to the western wall inside the fortress and go up the stairs. Having made your way into the building, you need to deal with the guards and go up the stairs.
Walk forward along the wall, climb up the wooden ladder again and find chest with the first part of the quest medallion.
Right part
The right half of the medallion is hidden in Fort Farot in the Calid region. This location poses a serious danger to low level character - dragons and strong monsters will come across on the road, which can slow down a weak hero for a long time.
There is one easy way to quickly get to Farot Fort - you should visit Burnt ruins east of 
Waiting inside the fort rats and bats, capable of inflicting high damage even on pumped heroes. Go through the inner platform to the wooden stairs, climb up and find the chest with the second part of the quest item.
Why the Great Dectus Elevator is needed
Next, just return to the lift and stand on the circle inside. A cut-scene will begin, showing the age to a new location - a mysterious Altus plateau, where you can find unexplored lands and get more opportunities to upgrade your character.
