It is called the 'denominator'
It is called a denominator
the denominator
keel
It is sometimes called the base.
duckboard
duckboard
duckboard
trenchs
Trenchs, mountains, and volcanos
mostly bunkers, pillboxes and trenchs
thousands
The British were fighting the Germans in the trenches
Trenches are caused by subduction.
A wire bottom in summer to promote air circulation. And a wood bottom in winter to prevent drafts.
Man made wood are called engineered wood or composite wood,
bravery, great leadership