The church of the Dormition of the Theotokos has the following dimensions: in length it is 48 arshin, and in breadth 8 arshin [1 arshin = 28 inches]. At an earlier time the church had also windows beside the doors. The whole temple was adorned with a multitude of lampadas and offerings. Two small entrances lead into the burial-chamber of the Mother of God. One enters through the western doors, and exits at the northern doors. The burial-chamber of the All-Pure Virgin Mary is veiled with precious curtains. The burial place was hewn out of stone in the manner of the ancient Jewish graves and is very similar to the Sepulchre of the Lord. Beyond the burial-chamber is the altar of the church, in which Divine Liturgy is celebrated each day in the Greek language.
The olive woods on the eastern and northern sides of the temple was acquired from the Turks by the Orthodox during the seventh and eighth centuries. The Catholics acquired the olive woods on the east and south sides in 1803, and the Armenians on the west side in 1821.
On August 12, at Little Gethsemane, at the second hour of the night, the head of the Gethsemane church celebrates Divine Liturgy. With the end of Liturgy, at the fourth hour of the morning, he serves a short Molieben before the resplendent burial shroud, lifts it in his hands and solemnly carries it beyond the church to Gethsemane proper where the holy sepulchre of the Mother of God is situated. All the members of the Russian Spiritual Mission in Jerusalem, with the head of the Mission presiding, participate each year in the procession (called the “Litania”) with the holy burial shroud of the Mother of God..
The rite of the Burial of the Mother of God at Gethsemane begins customarily on the morning of August 14. A multitude of people with hierarchs and clergy at the head set off from the Jerusalem Patriarchate (nearby the Church of the Resurrection of Christ) in sorrowful procession. Along the narrow alley-ways of the Holy City the funeral procession makes its way to Gethsemane. Toward the front of the procession an icon of the Dormition of the Most Holy Theotokos is carried. Along the way, pilgrims meet the icon, kissing the image of the All-Pure Virgin Mary and lift children of various ages to the icon. After the clergy, in two rows walk the black-robed monks and nuns of the Holy City: Greeks, Roumanians, Arabs, Russians. The procession, going along for about two hours, concludes with Lamentations at the Gethsemane church. In front the altar, beyond the burial chamber of the Mother of God, is a raised-up spot, upon which rests the burial shroud of the Most Holy Mother of God among fragrant flowers and myrtle, with precious coverings.
“O marvelous wonder! The Fount of Life is placed in the grave, and the grave doth become the ladder to Heaven…” Here at the grave of the All-Pure Virgin, these words strike deep with their original sense and grief is dispelled by joy: “Hail, Full of Grace, the Lord is with Thee, granting the world, through Thee, great mercy!”
Numerous pilgrims, having kissed the icon of the Dormition of the Most Holy Theotokos, following an ancient custom, then stoop down and go beneath it.
On the day of the Leave-taking of the feast (August 23), another solemn procession is made. On the return path, the holy burial shroud is carried by clergy led by the Archimandrite of Gethsemane.
There is an article in the “Journal of the Moscow Patriarchate”, 1979, No. 3 regarding the rite of the litany and Feast of the Dormition of the Mother of God in the Holy Land.
Today flowers are blessed in church, and people keep them in their homes. During times of family strife or illness, the flower petals are placed in the censer with the incense, and the whole house is censed. See the Prayer at the Sanctification of any Fragrant Herbage.
~The Website of the Orthodox Church in Amercia (OCA), https://oca.org/saints/lives/2016/08/15/102302-the-dormition-of-our-most-holy-lady-the-mother-of-god-and-ever-v.