During your about 3 hour tour, after securing your safety gear, you'll be lead along the glacier over different crevices and to various glacier lakes. They'll even let you drink glacial water and try a glacier mud mask in the summer - so make sure to bring an empty water bottle if you want to fill up. This year we visited in the Winter as well, and although it was cold it was such a different experience than in the summer as we were able to walk through the crevices and on the glacier lakes. If you have the chance, this is one tour you won't want to miss!