Use a shovel and dig!!
A place with a lot of natural resources that is very valuable.
Price is the most efficient, fastest way to allocate resources, but it is not always the best. For example, rare resources such as medicines would be available only to the richest members of society and would likely be hoarded or driven to an underground economy.
the underground rail road was one way
there is one way. underground or rocks which will not protect you for long.
underground
underground
Underground.
The most easy way to get one is to dug it up in the underground
The best way is to reuse the item, sometimes called "repurposing."
There are too many underground mines to list. Australia is very rich in mining resources.
underground heat such as magma , hot springs, and geysers
Underground, where else? (not strip mining)