HiPOD: Week of 29 November 2021 

The Saga of Airy-0

The Saga of Airy-0
Up to now, we’ve never imaged Airy-0, a crater within Airy Crater that formerly was used to define zero longitude on Mars. That definition is now based on Viking Lander 1, but we wanted to image Airy-0 for cartographic interest. It was named in honor of the British Astronomer Royal Sir George Biddell Airy (1801–1892).  
On Athabasca Valles Lava

On Athabasca Valles Lava
This image shows a nice little pedestal crater atop lava in Athabasca Valles. This feature might be able to tell us something about the history of mantling of the lava. The Athabasca Valles channel system of Mars has been the focus of much research and debate. In addition to lava flows, there is evidence of past aqueous activity.   
The Great Scattering

The Great Scattering
This image shows a large area of ejecta scattering from Korolev Crater (directly south of here). This ejecta appears somewhat elongated and may be due to wind or could have been caused due to the angle at which the meteor hit Mars. Additionally, the ejecta indicates the type of wind this specific northern region of Mars experiences.  
Dark Striations near Holmes Crater

Dark Striations near Holmes Crater
Context Camera imagery reveals dark streaks extending east of minor crater rims within and around Holmes Crater. This observation can give us some insight on local mass wasting processes (like landslides) as well as details about the stratigraphy of the terrain. Additionally, disturbances to dark sands may characterize windblown processes. The striations are seasonal fans.  
A Depression to the North of Hyblaeus Dorsa

A Depression to the North of Hyblaeus Dorsa
A Context Camera image reveals a trench within a depression to the west of Elysium Mons. The visible erosion within the field of view suggests fluvial processes. Our picture can also help with determining subsurface composition. Hyblaeus Dorsa is a series of northeast-trending scarps and ridges that form a topographic divide between Utopia and Elysium Planitiae.