preposition
into
IN-tuh/ˈɪntə/
Moving from outside to within something's bounds.
The woman lowers the apple into the clear glass bowl.

Etymology
In supplies the interior location, while to supplies direction toward it. Their combination helped distinguish movement into a place from being in it as older grammatical endings faded.
In context
They chased after me. I ran into a hidden chamber, and that s where I saw the five people, and saw the egg.
More examples
- Pour the milk into a clean glass.
- The train disappears into the tunnel.
- He slips the letter into an envelope.
Similar words
- inside
- Can describe either an interior location or movement to it.