Cracks in craters - Humboldt's fractures are likely due to intrusive magmatic activity that pushed the floor upward, causing it to crack [NASA/GSFC/Arizona State University].
Anaglyph through the floor fractures seen in Humboldt Crater, located at 27.45°S, 80.43°E. NAC images M1151331320L/R, M1151324198L/R [NASA/GSFC/Arizona State University].
