Dwayne “The Rock” Johnson continues to use his Twitter and Instagram accounts to self-promote his upcoming projects. While he’s been focusing an ton of energy on his upcoming Hercules film, he is now pulling back the curtain a bit on his earthquake epic, San Andreas. Here’s a pic the megastar just sent out to his fans, showing him preparing for his role in the action-packed film: Helo rappelling techniques for our earthquake disaster film SAN ANDREAS.