Volcanic venus

The Magellan spacecraft successfully mapped over 90% of Venus's surface despite its challenging atmosphere. including mountains as high as 7 miles, craters up to 30 miles across, and gigantic volcanic domes, including lava flows as long as 125 miles.
 (NASA) United States 1991 Volcanic venus

The Magellan spacecraft successfully mapped over 90% of Venus's surface despite its challenging atmosphere. including mountains as high as 7 miles, craters up to 30 miles across, and gigantic volcanic domes, including lava flows as long as 125 miles.