You create a massive chasm in the ground. Choose a point within range, and a 20-foot-wide, 60-foot-long, and 40-foot-deep chasm opens up in the ground. Any creature standing in the area must make a Dexterity saving throw, falling into the chasm and taking 8d6 bludgeoning damage on a failed save. On a successful saving throw, a creature instead clings to the edge of the chasm, taking no damage and not falling inside.   When the spell ends, the chasm collapses in on itself, reverting the ground to its previous form. All conscious creatures inside are pushed upwards as the chasm collapses and safely lands on solid ground. Unconscious creatures are not pushed, and are instead trapped within the ground.