You will find Gerudo Canyon Skyview Tower in the hills overlooking Gerudo Desert, but the elevator is out.
Tower Location
Gerudo Canyon Skyview Tower is located at -2432, -2178, 0307.
Repair the Elevator
The tower needs repairs, but the elevator is not working. Climb up to the base of the tower to where the upper chain of the elevator is, and attach one square board to it so that it's centered. (If you make a larger platform, it might bump into the scaffolding and not be able to go down.) Then attach metal crates to the top of the board board and attach other construction materials as needed until the elevator goes down. Then talk to Sawson on the elevator after he reaches the upper area so he can repair the tower.
Map the Area
After the tower is repaired, open the door and examine the terminal to activate the teleport location here. Then step onto the glowing spot in the tower and examine it to be launched upward and map the Gerudo Canyon area.