Highline Lake State Park is a Colorado state park. It is home to two lakes, the Highline Lake and the Mack Mesa Lake. It is well known for its birdwatching opportunities and has two wildlife migratory waterfowl overlook kiosks where it is possible to watch Great blue heron, white pelicans and whooping crane among many others. There is fishing allowed all year round. It is also open in winter to Snowshoers and Cross Country Skiers.