The Rock, Historical landmark at Northwestern University in Evanston, United States.
The Rock is a large quartzite boulder on the campus of Northwestern University in Evanston, Illinois, placed between two campus buildings. Its entire surface is layered with coats of paint applied over many decades, making it one of the most recognizable spots on campus.
The boulder was brought to campus in 1902 by a graduating class, transported from Wisconsin to serve as a drinking fountain. It gradually stopped functioning as a fountain, and students began painting it to leave messages, shifting its purpose entirely over the following decades.
There is an unwritten rule that governs painting: a group must arrive at midnight and guard the boulder for several hours before applying their design. This tradition turns a simple act of painting into a shared ritual that connects students across generations.
The boulder is accessible at any time and sits in a central part of the Northwestern University campus, making it easy to find on foot. Those who want to paint it should plan for dry weather, as rain affects how well the paint sticks to the surface.
When the boulder cracked during a relocation attempt in 1989, engineers repaired it using specialized epoxy to bond the pieces back together. It is said that the many layers of paint have added considerable weight to the original stone over the years.
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