There are several processes that can cause this, each with its own name.
One of the most common is called "spalling", which can be caused by thermal expansion, ice formation in fissures, etc.
Another is caused by the growth of tree roots into fissures.
Smaller, from erosion.
You smash a rock with a bigger rock
be cause a smaller rock has more volume
Cobble
When liquid rock cools slowly, crystals will be bigger because there is more time for the crystals to grow and develop before the rock solidifies. In contrast, when liquid rock cools quickly, crystals are smaller because there is less time for them to form and grow.
The object that does work on the rock as it falls is called the force of gravity. Gravity pulls the rock downward toward the center of the Earth, causing it to accelerate as it falls. This force is a result of the gravitational attraction between the rock and the Earth.
Figuring you mean the landmark, no little rock is bigger
Meteorite.
A meteorite.
wind could possibly move the rocks or smaller ones a. the rocks will compact to form another and a bigger and bigger one ect. also if the blew hard enough on old rock the rock might etc into smaller rocks on the process begins again
A meteorite.
A meteorite.