You can do a glacier hike in Iceland. I didn't do it because they forgot to bring hiking boots for me, but I probably would have died in one of those crevasses. The group arrived back in darkness and my daughter had one word to describe it "Awesome" before collapsing into her seat on the bus! so pleased that you had the experience. The glaciers are melting and people won't be able to hike glaciers at all. The ice caves expedition in Iceland was on a separate day. Our driver said I wouldn't be able to do it but when my daughter returned to the bus, she said I would have been able to - it was just a straight walk in. I was disappointed i didn't give it a go! The photos looked amazing!