It's a stunt, Jim

Behold! Zachary Quinto looking completely comfortable as Spock, filming a stunt scene for the Untitled Star Trek 2 Sequel.

After first rehearsing the scene with a Spock stunt double Quinto was then rigged to a wire in front of a large green screen and lifted 10 stories high before being dropped at a high rate of speed as if he was falling. In the scene Spock is wearing a 'Volcano Suit' and carrying an unknown piece of equipment with the Starfleet emblem. A Volcano is somehow involved in this scene. The crew had a real fire burning off camera to catch the fire reflections on Spock's 'Volcano Suit'.

Images: Rex