Icy Bay (Tlingit: Lig̲aasi Áa) is a body of water in the borough of Yakutat, Alaska, formed in the last 100 years by the rapid retreat of the Guyot, Yahtse, and Tyndall Glaciers. It is part of the Wrangell-Saint Elias Wilderness. At the beginning of the 20th century, the bay entrance was permanently blocked by a giant tidewater glacier face that calved icebergs directly into the Gulf of Alaska. A century-long glacial retreat has opened a multi-armed bay more than 30 miles (48 km) long. Icy Bay is a popular destination for sea kayakers, and is reachable by bush plane from Yakutat, Alaska.