Sahasra Slope Skyview Tower
Tears of the Kingdom
The Sahasra Slope Skyview Tower is located in the Necluda province. Link arrives to find Billson attempting to open the tower to perform maintenance. However, the sliding doors appear to be stuck and neither he nor Link can open them.
Link must enter Sahasra Slope Cave below from either of its two entrances which are slightly northwest and slightly southeast of the tower. He will need to destroy the rocks in order to reach the center of the cave just below the tower itself. From there he can use Ascend to emerge inside of the Skyview Tower. The door is being blocked by two Long Sticks, so by removing them the door will once again function.
Billson performs his maintenance, and then the tower is ready to be used once again.