'The tree on his chest is meant to be Yggdrasil, the World Tree that ties all Nine Realms together. Since Heimdall is the watcher of these realms, the amber jewel on his chest is the same colour as his eyes. Heimdall sees all!'
- The Art of Thor: The Dark World
Remote-controlled drone that flies and is in the form of a dragonfly - video embedded below:
With the BionicOpter, Festo has technically mastered the highly complex flight characteristics of the dragonfly. Just like its model in nature, this ultralight flying object can fly in all directions, hover in mid-air and glide without beating its wings.