Having never been in a subway before, I believed they were trains that would burrow underground like a sandworm and transport you from one place to another
A childhood belief about trains

others believed things like this
- I thought the underground railroad was actually a subway.— Greg
- I used to think underground trains actually descended into the tunnel, like a rollercoaster.— Natasha
- When trains (subways) go underground, my little sister thought that the lights were shooting stars.— Katie
- i believed that moles wore davy lamps on their heads so they could see underground— Omi
- For a very long time I believed that there were little men underground that changed the traffic lights!— Melissa
- I used to dig a super deep hole thinking it
would transport me to the galaxy — Rafaella