A map?
A map in the shape of an oval is called the Mollweide Map.
A farm map?
A map of the ocean is called a topographic map. On a map the oceans surface has highs and lows look similar to the hills and valleys of the Earth's surface.
The small map within a larger map is called an "overview map". Much like a regular map, the map contained by the overview map often shows the region of the larger map within the context of the larger area. If, for example, the large map shows a city then the overview map may show the country that contains it.
A pack of climbers
Probably a topographic or contour map, which would contain information about the mountain's elevation (height).
climbers and twinners
People who help climbers reach the summit of Mount Everest are called 'guides'.
Yes.
gumamela :)
If you are talking about the swirly pole thing, they are called corkscrew climbers.
A map?
I learned it was called a hitchhiker's thumb. its when your thumb is bent backward at the top.
A map in the shape of an oval is called the Mollweide Map.
Climbers - novel - was created in 1989.
A collective noun is a party of climbers.