<classify> Matenthedwe a malo akunja ndi mkati siofanana ndi mapanga akulu padziko lapansi zomwe nthawi zambiri zimakhala zotentha mosasiyana, koma zimakhala zofanana potengera mabowo akuluakulu amene ali pansi, anatero Glen Cushing waku United States Geological Survey USGS Astrogeology Team ndi Northern Arizona University imene ili ku Flagstaff, Arizona.  <topic>: geography 