Scenes from Country Thunder

Dierks Bentley performs at Country Thunder in Twin Lakes, Wis., July 20, 2018.

Country music fans gathered in Wisconsin last weekend for the touring Country Thunder music festival, featuring two dozen acts over four days.

All Smiles

Music fans didn't let inclement weather get in the way of enjoying Country Thunder in Twin Lakes, Wis.

The Stage Is Set

Country Thunder in Twin Lakes, Wisconsin.

Selfies

Fans at Country Thunder in Twin Lakes, Wis.

Midland

Midland performs at Country Thunder in Twin Lakes, Wis., July 19, 2018.

Midland

Midland's first album, 2017's "On the Rocks," hit number 2 on the country chart, and featured the Top 10 hit "Drinking Problem."

Midland

Midland performs at Country Thunder in Twin Lakes, Wis., July 19, 2018.

Midland

Mark Wystrach of Midland performs at Country Thunder in Twin Lakes, Wis., July 19, 2018.

Wystrach is also an actor who has appeared on the soap opera "Passions," "Kamen Rider: Dragon Knight," "CSI: Miami," and the film "Johnny Christ."

Midland

Jess Carson, Cameron Duddy and Mark Wystrach of Midland perform at Country Thunder in Twin Lakes, Wis., July 19, 2018.

Midland

Jess Carson of Midland performs at Country Thunder in Twin Lakes, Wis., July 19, 2018.

Midland

Midland performs at Country Thunder in Twin Lakes, Wis., July 19, 2018.

Kicking Back

Relaxing at Country Thunder.

Audience

An enthusiastic crowd at Country Thunder in Twin Lakes, Wis.

Sam Hunt

Sam Hunt performs at Country Thunder in Twin Lakes, Wis., Thursday, July 19, 2018.

Sam Hunt

Hunt, who has written songs for Keith Urban ("Cop Car"), Kenny Chesney ("Coming Over") and Reba McIntire ("Love Somebody"), released his first album, "Montevalio," in 2014. It went to Number 1 on the country chart and #3 on the Billboard 100.

Sam Hunt

Hunt's top country hits include "Leave the Night On," "Take Your Time," "House Party" and "Body Like a Back Road."

Sam Hunt

Sam Hunt performs at Country Thunder in Twin Lakes, Wis., Thursday, July 19, 2018.

Fans

High spirits at Country Thunder.

Storm Clouds

Storm clouds at Country Thunder in Twin Lakes, Wis. In the early morning hours of July 20, a lightning bolt struck a tent on the campground. A 22-year-old student, Brittany Prehn, was seriously injured and transported to the hospital.

"Brittney has survived, but has a long road to recovery ahead of her," her mother Lisa Prehn wrote on a GoFundMe page set up to raise money for medical bills.

Spite the Weather

Rain won't keep music fans away.

Gladiatorial Combat

What one does in mud.

Howdy

Music fans at Country Thunder Wisconsin.

Fans

We checked the Country Thunder website and could not find a dress code.

Vittles

Ready to dig in.

Cooling Off

Chillin' at Country Thunder.

Fans

Eleven-year-old Kayl Emery told CBS News it's her fourth year at Country Thunder, and she gets the same spot each time.

Ashley McBryde

Ashley McBryde performs at Country Thunder at Twin Lakes, Wis., July 20, 2018.

After her 2017 single, "A Little Dive Bar in Dahlonega," the singer-songwriter released her first album this year, "Girl Going Nowhere."

Brothers Osborne

T.J. Osborne, of the Brothers Osborne, performs at Country Thunder at Twin Lakes, Wis., July 20, 2018.

Brothers Osborne

John Osborne, of the Brothers Osborne, performs at Country Thunder at Twin Lakes, Wis., July 20, 2018.

Brothers Osborne

As high school students in Maryland, T.J. and John Osborne played with their dad in a cover band, Deuce and a Quarter, performing songs by Merle Haggard and Lynyrd Skynyrd.

Brothers Osborne

The Brothers Osborne have released two albums: "Pawn Shop," and "Port Saint Joe." Their biggest single to date, "Stay a Little Longer," reached Number 2 on the Country chart.

Brothers Osborne

A meet-and-greet with Brothers Osborne.

Brothers Osborne

The Brothers Osborne meet with fans at Country Thunder.

Brothers Osborne

A fan gets an autograph.

Brothers Osborne

Hat's off to the fans!

Cheering Section

Fans at Country Thunder.

Flag Wavers

A red-white-and-blue reason to cheer.

Good to the Last Drop

Sustenance.

Crowd

The crowd at Country Thunder.

Dierks Bentley

Dierks Bentley performs at Country Thunder at Twin Lakes, Wis., July 20, 2018.

Dierks Bentley

Dierks Bentley performs at Country Thunder at Twin Lakes, Wis., July 20, 2018.

Dierks Bentley

To date Dierks Bentley has had 16 #1 country singles, including "What Was I Thinkin'," "Come a Little Closer," "Am I the Only One," "Somewhere on a Beach" and "Forever Country."

Dierks Bentley

Dierks Bentley performs at Country Thunder at Twin Lakes, Wis., July 20, 2018.

Dierks Bentley

Nominated for 13 Grammy Awards, Bentley has won three Country Music Association Awards, and the Academy of Country Music's Merle Haggard Spirit Award.