GEOLOGY Venus displays a geology shaped by volcanic activity and resurfacing processes. Vast plains, mostly composed of basaltic rock, cover about 80% of the surface. Enormous shield volcanoes, such as Maat Mons and Sapas Mons, dot the landscape. Evidence suggests recent volcanic activity and lava flows, indicating a dynamic geological history. Tectonic features like ridges, faults, and fractures span the planet, hinting at past tectonic movement. Impact craters exist, but their scarcity indicates Venus undergoes intense resurfacing, potentially erasing many older geological formations over time.