Specialists who examined one of the newest and most unique islands in the world last year discovered mysterious sticky dirt.

The island is located in the South Pacific near Tonga and is informally called Hung Tong-Hung Haapai (Hung Tong). It emerged after a volcanic eruption at the end of December 2014, which linked two older islands. NASA claims that this is the first island of its kind, formed since the satellites began to constantly shoot the Earth.

Specialists have mapped Wenghu-Tonga in detail since its formation using aerial photography and satellite imagery, but only in October last year the team went on an expedition to the isle to let researchers know about its unique vegetation.

They stated that the “light-colored clay mud” was one of the most intriguing surprises they found on the isle.

Scientists used a high-precision GPS receiver and a drone to create a three-dimensional map of the island with higher resolution.

Researchers report that the island seems to be collapsing faster than previously thought due to precipitation.