There are many abandoned mines beneath the city of rome from thousands of years.So, It may create risks for public to live above the surface.So rome has deceided to create cavity network which can be inspected and the different steps of the progressive migration of voids toward the surface can be identified..
I think like granite, amethysts are formed from magma deep underground. This helps them to cool slowly forming the large crystals they have.
Dental caries are cavities.
yes
landforms are rocks that are underground
Underground water is called underground water, because it is "underground" not because it is fresh or salt. You can have underground salt water reservoirs just like you can have fresh water ones.
Underground Network was created on 2001-04-24.
the fatty network of connective tissue that fills the cavities of bones.
No
the Underground Railroad
london
Through a network of underground pipes.
The Wollstonecraft railway station is the platform with the sharpest curve radius in the whole of the London Underground network.
No, but some bumble bees do. In the wild honey bees would be in natural cavities such as holes in trees.
Intrusive rocks are formed when rock is squeezed into underground cavities in other types of rock, where it crystallizes.
The Underground Railroad
Rabbit burrows are called "warrens".
The Underground Railroad