No, after the alpha decay of polonium lead isotopes were obtained.
There are tunnels under some pyramids BUT these do not go down to the center of the earth they only go down a few tens of meters.
Blown around and compacted are what happens to dirt from mole tunnels. The mammal in question (Talpidae family) compresses some of the dirt to form non-collapsible tunnels underground and ejects the rest out the entryway (for compaction in place or movement by people, rain, wildlife, and wind.
I don't know for sure, but since you asked for an opinion... I have two theories. 1. The tunnels and holes are there to allow for the absorption of more oxygen from the water around it. 2. The tunnels and holes are there to provide shelter for smaller organisms that form a symbiotic relationship with the sea sponge.
Termites
It's called a rough endoplasmic reticulum.
they are vertical tunnels, angle tunnels, and horizontal tunnels. THE END
yes there are tunnels
when they finish making the tunnels
Depends on what you mean by tunnels. There are the short tunnels that allow you to move from playground to street and vice-versa.
Not tunnels for auto traffic. There are two auto tunnels on the westbank of the Mississippi River.
Tunnels of Doom happened in 1982.
Tunnels of Doom was created in 1982.
Tunnels of Armageddon was created in 1989.
Tunnels of Armageddon happened in 1989.
Tharolian Tunnels was created in 1982.
Tharolian Tunnels happened in 1982.
Drakelow Tunnels was created in 1943.