Jerusalem is a stand that, although it has a relatively simple concept, it can be very dangerous if used correctly. Manifesting as massive amounts of sand, Jerusalem has the ability to completely cover an area with itself, up to and including manifesting high in the air as a floating landmass, shrowding the area beneath it in darkness.
SAND MANIPULATION
Jerusalem can manifest and manipulate massive quantities of sand. This can result in a massive area being covered in it, of which the Stand User can manipulate. They can harden the sand into stone-like structures that can crush it's enemies or hinder the movement of people with, or form quicksand beneath an individual's feet.
The only thing limiting this ability is that it depends on the Stand User's line-of-sight. As such, it's not unheard of for the stand-user to have set up a base-of-operations with a high vantage point.
Due to Jerusalem's ability to create floating landmasses of sand, it can easily cover an area beneath these floating islands in darkness.
Thanks to it's ability being bound to the sands, it cannot be harmed in any way. As such, one would have to look for the Stand User and defeat them.
INSPIRATION
My partner, HunnyBon, had a dream about a sand-based stand that could cover an entire area with it's mass, making the area beneath it look ruined and run down. She joked to call it "that one stoner metal song that goes on for like 10 hours". Which is a misnomer, as it only goes on for one hour.