The "Narrows" section of the Green river has many qualities of a steep creek that drops between pools, and doesn't resemble many broad, slow-moving rivers in the southeast. John Pilson describes the Narrows as "boulder congested" with a "pool-drop character." This length of the river is considered an extremely difficult portion of whitewater, as it contains nine class IV rapids, and eight class V rapids (these being the most difficult runnable rapids). The first official descent of the Narrows was made in 1988, and it is still frequently paddled today. However, the Narrows are typically only paddled by seasoned whitewater boaters with an extensive knowledge of boating technique. Many whitewater enthusiasts have been injured here, and three qualified Class V boaters have died on the Green River. Three of the biggest and most notorious class V rapids on this section are known as the "Big Three." These are "Go Left and Die" (Class 5.1), "Gorilla" (Class 5.2), and "Sunshine" (Class 5.2).