The lichenologist Trevor Goward, with an intriguing definition, describes lichens as fungi that have discovered agriculture. They are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga (or cyanobacterium – or both). The result of such alchemy is a bizarre organism that can display a larger diversity in morphology, physiology, and biochemistry than other many organisms. Symbiosis in lichens is so well-balanced that lichens have been considered to be self-contained miniature ecosystems (Honegger 1991).
The “bubbles” are the symbol of Grenoble. They are the famous tourist cable cars, shaped as spheres, that, with a journey through the air, will bring you quickly to the top of the mount that watch over the town. In few minutes, you get right at the Bastille, so that you can keep your energy to continue the day trip to the other peaks.