Thursday will mark the 100th anniversary of the National Park Service, and Glacier National Park will be hosting the U.S. Secretary of the Interior, Sally Jewell, along with other dignitaries, for a tour of the park.

Public Information Specialist Tim Rains said Secretary Jewell will be specifically looking for evidence of climate change in the park.

"She's coming to Glacier Park on Thursday, she'll hike up to the Hidden Lake overlook area and speak to climate change, and work with some of our climatologists from the USGS and address what we're looking at for the next 100 years in the event that our glaciers are gone," Rains said. "The other thing that visitors can take advantage of is tomorrow evening, we're hosting this Insta-meet, Visitors can come here at 6 o'clock in the Apgar Village area, then at 7 o'clock we'll be taking this historic photograph, there's a map that visitors can sign, then get their photo taken and be a part of history, as well as celebrate the 100th birthday of the park system."

Rains said Jewell will visit as many major areas of the park that time will allow.

"We are taking her up the Going-to-the Sun Road and she'll be stopping at the Logan Pass where we'll take the three mile hike out and back up to Hidden Lake, and along the way, she'll be looking at the glaciology and shifts in the climate," he said. "Then, on the way back, she'll be stopping at various important points along the road. She'll be learning about the Goat Program, she'll meet Gracie the goat herding dog, our new 'Bark Ranger'.

Rains said Secretary Jewell will also be meeting with Senator Steve Daines that evening for discussions about Montana issues.