The mortal world in which we are living belongs to Formless Mind ( Nirakaar Mann) who himself is Kaal Niranjan. He resides in 5th element of the Universe - Sky (Vacuum - Space - Shunya), from where he governs the whole universe and rules over every single living being on earth (except Satguru). All Saints addressed Niranjan with the name "Kaal Purush".
The creations of Shunya and Maha-Shunya (as shown in above image) comes under great dissolution. Whereas, the abode of a true Satguru is "Amarlok - Satlok" (4th Lok ), which never comes under great dissolution and is an Immortal Abode (World), which indeed is the true origin of a Soul.