they were long narrow muddy about 7ft tall had michine guns placed around the trench to bring down enemys a lot of people in the trenches also got trenchfoot
it was very hard. if you can, look up trench warfare on wikipedia.org
Lines on the ground.
the mariana trench is a big hole in the ocean that is very deep, dark and scary.
trench foot occurs when your feet is wet and cold for long periods of times, thing that was common in the world wars inside the trench lines. They were cold and wet. Once the condiction takes place, the feet swell up bad and turns black. Being like this too much will require amputation.
Periscopes were used in both WW1 and WW2. They were used on submarines and in the trenches. It was dangerous to look over the top of a trench so soldiers developed "trench periscopes".
The first world war is usually referred to as a trench war. A trench war is fought generally in trenches You can look up trench warfare" in wikipedia where it will tell you more about how it is fought. Belgium and north France still have many sites where the trenches can be visited and viewed a sad memorial to a war in which so many people died.
A trench was set up in a zigzag shape to make it a less target for the opposite side to target. It consisted of sandbags, barbed wire, fire steps and unsanitary places to do your business.
The closest thing I can think of which might answer this question is the trench periscope. It was like a pair of stationary binoculars, yet able to look above a trench like the periscope of a submarine. It was more like battlefield surveillance than spying.
to look like domrrtag
it is a semi automatic rifle that looks like it a trench gun sniper stock a pistle grip the body is mostly wood
A French drain is a trench filled with gravel or rock that redirects water away from an area. It typically has a perforated pipe at the bottom to help drain the water. Unlike other drainage systems, a French drain does not rely on surface runoff but instead collects and redirects water underground.
A rift valley looks like a very huge trench. There is a wide opening at the centre of the two escarpment walls on either sides.