Humboldt Crater

Humboldt Crater

Courtesy of NASA

http://images.jsc.nasa.gov/luceneweb/caption.jsp?datesearch=Go&from_day=1&from_month=1&from_year=1900&hitsperpage=5&pageno=470&photoId=S71-44668&searchpage=true&to_day=31&to_month=12&to_year=3000


Here is a view of Humboldt Crater from the Apollo 15 command/service module in lunar orbit. Note the cracks in the floor of the crater. Structures in the dark areas on the crater floor suggest the dark material is lava.