-Messenger photo by Hans Madsen
Randy Burk, vocalist with Randy Burk and the Prisoners, entertains the crowd Saturday at the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt. The other band members, from left, are Dave Duchaarme-Jones, guitar; Chris Hansen, drums; Jason Reed, guitar and vocals; and Todd Mason, bass. The band is based in Des Moines. Saturday's lineup also included the Lazy River Band. On Sunday, the event featured a freewill donation barbecue and the bands Section 7, Ronley King Blues Band, Wild Ambition and the Burnin' Sensations.

-Messenger photo by Hans Madsen
Randy Burk, right, along with guitarist Dave Ducharme-Jones, at left, entertain the crowd Saturday afternoon during the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt. They're both part of the Des Moines-based group Randy Burk and the Prisoners.

-Messenger photo by Hans Madsen
Randy Burk, of Randy Burk and the Prisoners, sings for the crowd Saturday afternoon during the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt.

-Messenger photo by Hans Madsen
Jason Reed, who plays rhythm guitar and sings backup vocals for Randy Burk and the Prisoners, sings for the crowd Saturday afternoon at the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt.

-Messenger photo by Hans Madsen
Jason Reed, who plays rhythm guitar and sings backup vocals for Randy Burk and the Prisoners, sings for the crowd Saturday afternoon at the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt.

-Messenger photo by Hans Madsen
Chris Hansen, drummer for Randy Burk and the Prisoners, keeps the time Saturday afternoon during the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt.

-Messenger photo by Hans Madsen
A group of fans arrives Saturday afternoon for the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt.

-Messenger photo by Hans Madsen
Paige Bowden, of Fort Dodge, center, smiles as her friend Makenna Naeve, of Manson, teaches her daughter, Everleigh Bowden, 1, a few dance moves Saturday at the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt.

-Messenger photo by Hans Madsen
Charlotte Nielson 9, of Humboldt, gets a loose meat sandwich Saturday afternoon during the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt. Cajun shrimp boil was also on the menu.

-Messenger photo by Hans Madsen
Some of the crowd enjoy the music Saturday afternoon during the 15th annual Rock ‘N’ Picnic in Lower Sheldon Park west of Humboldt.