A hockey rink is a rectangular area where the sport of ice hockey is played. It is typically 200 feet long and 85 feet wide, surrounded by walls called the boards. The surface is made of ice, which is maintained at a specific temperature to ensure it remains solid and smooth for skating. The rink is marked with various lines and circles, including the blue lines, red line, and faceoff circles. These markings help define the zones of play and are essential for the rules of the game. Each rink also has two goals at either end, where players aim to score points.