The Protocol on Environmental Protection to the Antarctic Treaty is opened for signature.
The Protocol on Environmental Protection to the Antarctic Treaty, also known as the Antarctic-Environmental Protocol, or the Madrid Protocol, is part of the Antarctic Treaty System. It provides for comprehensive protection of the Antarctic environment and dependent and associated ecosystems.
It was concluded in Madrid and opened for signature on October 4, 1991, and entered into force on January 14, 1998. The treaty will be open for review in 2048.