There have been at least four avalanches spotted by the Orbiter
Images taken last month show ice and dust breaking off from a steep cliff and settling below on the slopes. Massive debris clouds measuring over 590 feet across have been reported as a result of the avalanches.
The photos were obtained by the Mars Reconnaissance Orbiter which arrived on the planet in 2006. The overall landscape of Mars has not changed very much in millions of years. The recent activity was a rare treat for scientists that are observing the data returning from the Orbiter.
"We were checking for springtime changes in the carbon-dioxide frost covering a dune field and finding the avalanches was completely serendipitous," Jet Propulsion Laboratory scientist Candice Hansen said in a statement.