We are a family of five and want to experience walking/hiking a glacier. We are in the Denali/Anchorage/Seward/Whittier area and wasn't sure where the best place is to do that. Is it possible to just walk on Exit Glacier without having to pay anything for a tour? Also, is there another glacier we should look into? Is Matanuska Glacier any good? We would appreciate any help! Thanks!