sixpenceee:

Island that nobody can enter

Surtsey is a piece of land that formed in 1963 (Iceland), after a huge volcanic
eruption that has lasted for 3 years. Now, the land is used for
scientific research and observations. The focus of the work is to better
understand how an ecosystem forms from scratch, without any human
impact. There are only a couple of scientists that are allowed on the
island’s premises, making it one of a few forbidden places on earth.

(Source)