Dimensional lesion

A Dimensional Lesion acts as a portal leading from one place in space/time to another. Those who travel through them suffer no ill effects, unlike usage of a vortex manipulator (DW: The Sound of Drums) Such accurances can be caused when a time travel capable vehicale such as a TARDIS collides with another craft. If said transport arrives in the location it bumped into the other craft some time later, more lesions will be created. They can, however, be closed through an improvised device and detailed knowledge of the event, such as in the Eleventh Doctor's case. (VG: The Gunpowder Plot)