We woke this morning and boarded a bus to the Perito Moreno Glacier. We entered the park, and our guide gave us some quick instruction, then sent us out on our own to discover one of the largest glaciers in the world! It was HUGE!! I couldn't believe how wide and tall it was. It was calving and making all sorts of noises. After a couple hours wandering around the walkways at the viewing area, we boarded a boat to cross Lago Argentina. At the other side, we broke up into small groups and put on cramp-ons to begin our trek across the glacier! It was raining and cold, but what an experience. We walked with our guide all in line for about an hour, then stopped to watch him climb up an ice cliff with pick-axes. After a while longer, we headed back to the bus, completely freezing and soaking wet. It took a while to warm up from the cold rain, but after a good warm meal, we felt human again. I wish I had brought rain pants with me!! Otherwise, today was an incredible day.