A strange phenomenon what looks like a wall has been captured on Saturn's largest moon Enceladus by Cassini Spacecraft.
In 2005, the Cassini spacecraft started multiple close flybys of Enceladus, revealing its surface and environment in greater detail. In particular, Cassini discovered water-rich plumes venting from the south polar region.
According to NASA scientists, the plumes are similar in composition to comets, although recent research suggests much of the eruptions activity on the surface of Saturn's moon Enceladus could be in the form of broad, curtain-like eruptions rather than discrete jets.