Now the aspirant prepares himself for the second stage of his journey upwards, but before he is able to enter the causal realm, he has to pass on an incredibly narrow path, a curved tunnel or a bent pipe, known to the Eastern Adepts of Mysticism as Bunk-Naal. Kabir said about this tunnel to the mental worlds that it had only one tenth of the size of a mustard seed. And He compares the mind to that of an elephant.

Guru Nanak also described this tunnel and compared it with a passage which is only one tenth of a hair’s breadth. Other Adepts of Mysticism compared it to the eye of a thin needle. It is impossible for the aspirant to cross this tunnel without the assistance of a Competent Adept of Mysticism, but with the help of such a Master of Spirituality the path is broadened and the aspirant succeeds in ascending and descending without difficulties.

Thus, the initiated enters the causal regions through the U-shaped tunnel of Bunk-Naal. For some time the way forward is straight and even, but suddenly it drops steeply. After a downward bend it leads upwards again, and the initiated walks on an even path that leads to a region which is described as the seventh heaven in the Sufi literature.

If the initiated has reached the upper end of the Bunk-Naal tunnel his view and the whole perspective seems to be turned upside down, and he sees just like from the opposite side of the curtain or mirror which he has penetrated. Now he is in the second big division of creation known as Brahmand – egg of Brahm – in Eastern Mysticism.

Obviously, it is called Brahmand because of its elliptic form. In its totality it comprises the materio-spiritual as well as the physical universes, but it is much bigger than these two together, and, in fact, the three lower divisions of the entire cosmic creation can be perceived as a whole, the highest level of which is Brahmand, the spirituo-material division; in the centre there are the astral regions as the materio-spiritual section, and the lowest part is formed by the physical universe.

The residents of the causal regions are unspeakably happy, but after a long stay in Brahmand they are still subject to the final rebirth into the physical universe. Hence, they are not immortal as the liberated souls in the purely Spiritual Regions are, but they live in an immeasurable longer scale of time than the beings in the astral and physical universes. Brahmand is ruled by Maha Kal, which is also known as Par Brahm in Eastern teachings.

Maha Kal is the higher aspect of Kal and is located in the upper Spiritual Regions of Brahmand, just as Kal rules in the lower and more material regions.

In the lower regions of Brahmand the mental matter ranks first, for it is the level of mind, and mind itself consists of a refined form of matter and a certain amount of spirit.

The aspirant ascends to the lower levels of Brahmand and finds himself in the realm of the Universal Mind, known as Trikuti in Eastern teachings. This realm of Universal Mind was mistaken for God by a lot of metaphysicians and mystic theologians; however, to the Adepts of Mysticism and Their disciples this is only the initial stage of the second step on their journey upwards.

When the aspirant ascends to this region of Trikuti he hears a sublime melody that is very similar to a tonal expression of the word Om. It is a lingering, roaring sound reminiscent of the thunder of storm clouds on earth, but full of an unworldly sweetness and harmony. This sound comes from the middle of the rolling sound of the thunder of clouds. Here we have the four-petalled lotus. The light is red like that of the early dawn.