The following is respectfully quoted from “Myriad Worlds” by Jamgön Kongtrul:
Distinctive Features of Our Own World-System, Endurance
This section has two parts: (1) identification of Endurance, and (2) a supplementary explanation.
[I.C.1]
Identification of Endurance
Inside the great outer rim, within seas of scented waters,
Four jewelled lotuses support
A tiered arrangement of twenty-five world-systems;
The thirteenth is known as Endurance.
Within the great outer rim of that [arrangement of one] Flower-Filled World are the indescribable oceans of fragrant waters [descending from] the body of Great Glacial Lake, as numerous as the particles in all the buddha realms. In the center of these oceans are seas of scented waters filled with beautiful anthers on which rest four immense jewelled lotuses. A tiered arrangement of twenty-five world-systems is supported by these [lotuses]. In the spaces between each [of these world-systems] are infinite tiers of world-systems, which define their boundaries. The thirteenth of these [twenty-five world-systems] is our own third-order thousand world-system, known as Endurance.
The Sanskrit term for Endurance is sahā, which denotes possession, forbearance, or capacity. All sentient beings who have taken birth in this realm endure emotions and sufferings. In other words, beings possess these [afflictions] in great measure. “Endurance” also signifies the forbearance of hardship. The bodhisattvas of this realm patiently endure [hardship] with exceptional courage and excel in bravery. Thus, this realm is known as Endurance.
[I.C.2]
The supplementary Explanation
This third-order thousand world-system
Is completely encircled by realms–Covered, Surpassing, Stainless, Variously Emerged, etc.–
Equal in number to the particles of this thirteenth world-system.
[Endurance] is spherical, has a four-vajra demarcation. It is supported by a multicolored configuration of wind and rests on a network of lotuses.
This third-order thousand world-system of Endurance alone is encircled by buddha realms equal in number to the particles of this thirteenth world-system. To the east is Covered; to the south, Surpassing; to the west, Stainless; and the north, Variously Emerged. In the intermediate directions are Benefitting, Variously Appeared, Complete Joy, and Activator. Above and below are found Resounding Melody, Not Great, and others. Endurance is spherical and has a four-vajra boundary demarcation. It is supported by a multicolored configuration of wind and rests on a network of lotuses.
Illuminator, the teacher in this [world-system],
Appears throughout the Unsurpassed realms of the pure domains.
The enlightened teacher in our third-order thousand world-system [Endurance] is an emanation of the enjoyment dimension awakening, the great Illuminator. This is a single form whose vast emanations appear throughout all the Unsurpassed realms in the pure domains and teach the Dharma in the midst of all the powerful [bodhisattvas]. The Centrist scholar Dharmamitra explains:
This form, differentiated [from others] by vows, the power of cultivation [of merit and pristine wisdom], and intention, has attained complete enlightenment in one Unsurpassed domain alone. Therefore, myriad forms of the enjoyment dimension of awakening that dwell in all the [other] Unsurpassed realms are solely his apparition manifesting in a vast [display].
This four-continent [world-system] called Destructible
Is surrounded by ten other four-continent [world-systems].
Our four-continent world-system, which is situated in the center of Endurance, is known as Destructible. It is said that even this [world-system] alone is surrounded by ten other satellite four-continent world-systems. Beginning from the East, these are, respectively, Well Protected, Joyful, Unbearable, Excellent Essence, Befriended, Fine Land, Lion inhabited, Well Formed. Above is Bearing Wealth, and below, Radiant Light.
It is taught that these [world-systems] are formed and destroyed together;
This is the experiential domain solely of the lords of the tenth stage of awakening.
The view most widely shared by Buddhist systems is that [the worlds within] any single third-order thousand world-system are formed together and destroyed [together]. Another view states that all the realms of the emanations of a single supreme manifest domain of awakening (such as oceans of realms that are located in the Flower-Filled World) are formed and destroyed together. The magnitude of this latter view is unfathomable to proclaimers and others; it remains the domain of experience solely of the lord [bodhisattvas] of the tenth stage [of awakening].