Manhole covers are like big circles that cover holes on the ground. They are usually made of metal and are very heavy. They are used to cover a hole that leads to things like sewers or underground utility lines.
Some people have been stealing these manhole covers, and that's not good. It can cause problems for things like cars and people walking because if the cover is missing, they can fall into the hole and get hurt. Plus, if the hole is for a sewer or utility, it can cause damage to those systems.
The reasons why people might steal manhole covers include selling them for scrap metal, using them for furniture or decorations (which is dangerous and not a good idea), or just for fun.
However, stealing manhole covers is against the law and can get a person in trouble. It can also cause a lot of inconvenience, expense, and even danger to others. So it is important to leave manhole covers where they belong, and only let trained professionals handle them.