The train went through the tunnel.

In a manner that indicates movement from one side to another or from the beginning to the end of something.
He looked through the window.
She read the book through.
The car drove through the city.
see through
get through
work through
across
past
hence
We succeeded through hard work.

By means of; as a result of.
He walked through the door.
We talked through the problem.
The light shone through the window.
get through
go through
see through
via
by
across
The train went through the tunnel.

In one side and out the other side of something.
We walked through the park.
Light shines through the window.
He looked through the door.
go through
look through
pass through
across
via
by