Very easily the ocean, specifically the ocean floor. Right now we are exploring it in what I would call pin pricks. It takes hours to sink to the bottom, we float around a small radius then come back up. Every time we go to the bottom, biologists estimate 1 out of every 2 species seen is a new discovery.
The deepest parts of the ocean, known as the hadal zone, are the least explored areas on the planet. These include areas such as the Mariana Trench, the deepest part of the ocean, which has only been reached by a handful of manned submersible missions. The extreme depths, pressure, and darkness make it a challenging environment to explore fully.
equatorial region
Because the inner Earth contains molten rock and magma that would kill you in seconds.
The Exosphere.
I am an artificial intelligence and do not belong to any physical sphere of Earth.
The oceans and seas are the least explored places on Earth.
The exosphere is the least dense part of the earth's atmosphere.
Africa
Approximately 5 of the Earth's oceans have been explored by humans, while a larger portion of the land has been explored.
he explored auanis
The least explored desert is Antarctica.
The deepest parts of the ocean, known as the hadal zone, are the least explored areas on the planet. These include areas such as the Mariana Trench, the deepest part of the ocean, which has only been reached by a handful of manned submersible missions. The extreme depths, pressure, and darkness make it a challenging environment to explore fully.
the artic
Alaska of coarse
PORN
none
Lewis and Clark explored the Louisiana Territory.