the round hole at the top of a volcano, or a hole in the ground similar to this
They could clearly see the big crater on the moon through the telescope.
The volcanic crater offered a breathtaking view of the surrounding landscape and the magma chamber below.
Meteor impacts can create massive craters on the Earth's surface, leaving behind unique geological formations.
The astronauts explored the moon's surface, studying craters formed by countless meteoroid impacts.
The hiking trail led to the edge of a large crater, a reminder of the region's volcanic activity in the distant past.
