Christ used common, every day, things in order to illustrate theological concepts in the parables He told. Matt 13:44 and following “The kingdom of heaven is like a treasure hidden in a field…” This does not mean He was saying the heaven was or is a treasure in a field or that using the word ‘Gehenna’ means that hell is a garbage dump; rather these terms were used to help His listeners grasp the concept of His teachings and their ramifications.
Luke 16 beginning in verse 19 provides a better picture of what Christ was referring to when He spoke about hell.
Whilst we are on the subject of hell, I believe it exists; how it functions, I could not say but I would guess it would somewhat resemble the local Polish Visa office on any given day at about 13:00.