Question

What is the exclusion zone

Answer 1

An area into which entry is forbidden, especially by ships or aircraft of particular nationalities

Answer 2

The Chernobyl Nuclear Power Plant Zone of Alienation is an officially designated exclusion zone around the site of the Chernobyl nuclear reactor disaster. It is also commonly known as the Chernobyl Exclusion Zone, the 30-Kilometre Zone, or The Zone.