Added 1524337740 by Bogfrog.
Strangler figs begin life in the branches of other trees. As strangler figs grow, their roots descend to the forest floor. Their stems wrap around the host tree, until they form a lattice. The fig is now able to capture more sunlight and draw up more nutrients that the tree in which it grows. The host tree eventually dies.
The strangler fig lattice, which is often formed by more than one fig, is by then strong enough to support its own weight. It remains standing even when the host tree has rotted away, which is the case here.