Labels:text | screenshot OCR: CRATERS AND SEAS THE LUNAR SURFACE was heavily cratered by meteorite bombardment more than 3.5 billion years ago. The craters are up to 300 km (185 miles) across and are rimmed by walls of rocky mountains blown out by the impact. Some craters have terraced walls or concentric rings of mountains, and many have central mountainous peaks. The most spectacular craters have huge, bright rays of ejecta. Some of the largest are filled with solidified volcanic lava, forming maria (seas). HIGH IMPACT CRATERS Tycho, a ray crater, has a diameter of GALLERY 84 km (52 miles) and lies in the southwest region on the near side of the Moon. It has FACT high terraced walls and central peaks. FILE
