Zackenberg (or ZERO - Zackenberg Ecological Research Operations) is an ecosystem research station and monitoring facility situated in the Northeast Greenland National Park in northeastern Greenland. It is located about 450 km north of Ittoqqortoormiit. Zackenberg has 10 buildings holding scientific equipment and laboratories, living accommodations and a communication room.
The station can host up to 25 persons at the same time with additional 15 persons at the branch facility at Daneborg. Monitoring and research is conducted here into the effects of climate change. Each year the National Park is the goal for a growing number of scientific expeditions. The area is rich in arctic flora and fauna, and many also come to explore the many traces of ancient settlements. Along the thousand-kilometre-long coast are the remains of ancient Inuit settlements, where many are thousands of years old.