Answer:
Long and thin, red within, with a nail at the end.
What can be broken without being touched?
What goes trough your head but you forget it like 3 days after?
Ancient and majestic, great big piles of stones, Used to encase both riches and bones. Seen from certain angles, They look like big triangles.
When I type I tap these on the keys
Two little holes in the side of a hill. Just as you come to the cherry-red mill.