Maybe you are referring to crepuscular rays? http://en.wikipedia.org/wiki/Crepuscular_rays
A mountain with a crater is called a volcanic mountain or a volcano. It is created when molten rock, ash, and gas are expelled from the Earth's mantle through a vent or opening in the Earth's surface.
The outside opening of the rectum is called the anus. It is the opening where feces are expelled from the body during a bowel movement.
The circular opening in the roof of the Pantheon is called the oculus. It serves as the main source of light and ventilation for the building.
Sunlight reflected from the Earth to the Moon and back is called Earthshine. This phenomenon occurs when sunlight is reflected by Earth’s surface to the Moon, creating a faint glow on the dark side of the Moon.
When the sun's rays pass through a magnifying glass, it is known as focusing or concentrating the sunlight. This process can create a hot spot where the light converges, resulting in increased temperature at that point.
This is called squeezing or squeezing through. It refers to maneuvering through a tight or narrow space or opening.
When water passes through a rock, it's called infiltration. This process involves water seeping into the ground and moving through the tiny spaces within the rock.
convention
A Crevasse
The opening at the edge of a forest is called a clearing. It is an area where there are few or no trees or vegetation, allowing more sunlight to reach the ground. Clearings can be natural or created by human activity.
A volcano is the opening called in the earths crust called through which lava gases and other pieces of rock erupt.
Minerals seeping into an organism's remains can form fossils through a process called mineralization. Over time, the minerals replace the original organic material, preserving the structure of the organism in the rock.
through a process called photosynthesis.
The opening in called a urethra, in both males and females.
Infiltration. This process involves the water seeping into the soil and moving downwards through the soil layers.
Precipitation seeping through cracks and holes in the ground.
Photosynthesis