A miner.
geography
Fossils
a hoarder
There are lots of things underground: caves, worms, roots and seeds are four things.
The matter thrown out of a volcano while it is erupting is called lava, and it consists of melted rock matter. Before erupting, the lava moves underground towards the opening of the volcano. When it is underground like this, it is called magma.
There were people on the Underground Railroad that helped the slaves run away. Some of these people were Quakers, others weren't. They were called lots of things, from abolitionists to "conductors."
scientist
The earths crust is moved rather than pulled by things called convection currents. This is when heated rock from the earths core rises up and reaches the crust where it cools. It then sinks down again and carries on in a circle which moves the crust
no
What is a person called when they search for rare things?
Groundwater
Those metal things in the middle of the road are called "manhole covers" or "manhole lids." They are used to cover openings to underground utility lines and provide access for maintenance and repair work.