Great glaciers carved the physical features of what is today known as the Boundary Waters Canoe Area Wilderness (BWCAW) by scraping and gorging rocks. The glaciers left behind rugged cliffs and crags, canyons, gentle hills, towering rock formations, rocky shores, sandy beaches and several thousand lakes and streams, interspersed with islands and surrounded by forest. The BWCAW contains over 2000 designated campsites that offer the freedom to those who wish to pursue an experience of expansive solitude, challenge, self-discovery, and personal integration with nature. Back-country skills and preparation is a must for traveling in and enjoying a primitive camping experience. And over-night use requires a permit during high season.