'Easy Passage is a 6th-level ritual.[DCD:85] You create a slight dimensional warp along the length of a corridor, allowing it to hold larger creatures or objects than it otherwise could. A creature of a size that would normally have to squeeze through the area can instead move and act freely. A creature one size category too large to enter the space at all can instead do so by squeezing. Your Arcana or Nature check result determines the maximum dimensions of the area affected.