You create a concealed 5-foot-wide, 15-foot-deep pit in an unoccupied space on the ground you can see within range. The ground must consist of earth, sand, or similar loose material; otherwise, the spell fails, and the spell slot is wasted. The opening is lightly covered with loose material, disguising it as normal ground. A creature whose Passive Perception score equals or exceeds your spell save DC notices the pit. A creature can take an action to examine the area and discover the pit with a successful Intelligence (Investigation) check against your spell save DC. A creature that enters the pit's space must succeed on a Dexterity saving throw or fall into the pit.

If you cast this spell in a space adjacent to an existing pit created by this spell, you can merge the pits into one larger pit. A merged pit can be no larger than 10 feet by 10 feet.