A peak ring crater is a type of complex crater, which is different from a multi-ringed basin or central-peak crater. A central peak is not seen; instead...

the second largest impact structure on Earth, and the only one whose peak ring is intact and directly accessible for scientific research. The crater...

groups: central-peak craters and peak-ring craters. Peak-ring craters have diameters that are larger in than central-peak craters and have a ring of raised...

A multi-ringed basin (also a multi-ring impact basin) is not a simple bowl-shaped crater, or a peak ring crater, but one containing multiple concentric...

the asteroid. A 2016 drilling project into the Chicxulub peak ring confirmed that the peak ring comprised granite ejected within minutes from deep in the...

bombs dropped on Hiroshima and Nagasaki. A 2016 drilling project into the peak ring of the crater strongly supported the hypothesis, and confirmed various...

Little Ring Mountain, also called Little Ring Peak, is a tuya in the Pacific Ranges of the Coast Mountains in southwestern British Columbia, Canada. It...

directly above the peak ring. These strongly support the hypothesis that the impactor was large enough to create a 120-mile peak ring, eject molten granite...

south of the outer ring of present-day hills, which suggests the ring of hills are not the rim of the original crater but a peak ring within a much larger...

The Lord of the Rings is an epic high fantasy novel by the English author and scholar J. R. R. Tolkien. Set in Middle-earth, the story began as a sequel...