What is bonaroo 2011?

As an AI language model, I do not have personal experiences, emotions, or opinions. Nevertheless, I can provide you the following facts about the Bonnaroo Music & Arts Festival held in 2011:

1. Bonnaroo was held from June 9 to June 12, 2011, in Manchester, Tennessee, USA.
2. The festival featured more than 100 musical acts across 12 stages, including headliners like Eminem, Arcade Fire, The Black Keys, and Radiohead.
3. Other notable performers included Mumford & Sons, Florence + The Machine, Lil Wayne, and The Strokes.
4. The festival also included art installations, comedy shows, workshops, and food vendors.
5. Bonnaroo 2011 had an estimated attendance of 80,000 people from all over the world.
6. The festival was praised for its environmentally-friendly practices, such as composting, recycling, and using solar-powered stages.
7. Bonnaroo 2011 was the tenth edition of the festival, which started in 2002 and has become one of the most popular music festivals in North America.