Rope Trick

Casting Time: 1 action
Range: Touch
Duration: 1 hour
You touch a length of rope that is up to 60
feet long. One end of the rope then rises into the
air until the whole rope hangs perpendicular to
the ground. At the upper end of the rope, an invisible entrance opens to an extradimensional
space that lasts until the spell ends.
See PHB, pg. 272.