A multimedia theater piece at the University of Colorado will explore some of Boulder's disturbing periods of history in terms of race and class.

The production, which will open July 23, is part of the city's Sesquicentennial celebration, recognizing even the somber elements of Boulder's 150-year history. The multi-theater piece is called "Rock Karma Arrows" and will be presented in CU's ATLAS Black Box Studio.

Figures including Southern Arapaho Indian Chief Niwot tell their stories of the early founding of Boulder, and, in Niwot's case, his death following the Sand Creek Massacre in 1864.

"Looking at the disturbing aspects of Boulder history encourages the reflection and understanding that can lead to a more economically and culturally diverse future in Boulder," said Kirsten Wilson, who is an ATLAS artist-in-residence and director.

She said that theater can spur a community conversation.

The production blends interviews with local historians and Buddhist monks, with historical photographs and film. Wilson said that at times the images take up over 180 degrees of the Black Box theater space so that actors appear immersed in the history. The actors come across as interacting with the photos, struggling with the voices of the past and trying to understand how the images echo in the present.

Dan Corson, a Boulder historian and former City Council member, said that the unique theatrical production brings forward issues that are often overlooked.

"Boulder's histories often avoid or minimize the role of discrimination, elitism and racism," he said.

The cast includes 12 actors, dancers and improvisational musicians.

The 2 1/2-hour piece has "mixed tones," delivering scenes that are dark and intense with lighter moments and dance sequences, said production manager Angela Delichatsios.

"If you live in this area, it really opens you up to the story of Boulder," she said.

Performances will be at 8 p.m. Thursday through Saturday, July 23-July 25 and July 30-Aug. 1; and at 2 p.m. Sunday on July 26 and Aug. 2. Tickets are $18 for general admission, $13 for students and seniors, and $35 for the gala opening on July 23. Tickets are available online at www.brownpapertickets.com/event/61128.

More information about the production is at www.colorado.edu/atlas/rockskarmaarrows. More information about Boulder's Sesquicentennial celebration is available at www.boulder150.com.

Contact Camera Staff Writer Brittany Anas at (303) 473-1132 or anasb@dailycamera.com