Ever considered your colon? Colorectal cancer is the second leading cause of cancer death in Canada, yet the disease is about 90 percent curable if caught and treated early. To promote regular screening, the Colorectal Cancer Association of Canada takes its giant inflatable colon on tour across Canada. The 40-foot-wide pink tunnel shows visitors what some common colon diseases look like up close and personal. Click through to see what it's like to walk through a colon.