Is it permissible to place a deceased person in a grave built above ground level and then bury another deceased person with them later?

Question:
May Allah reward you, Honorable Shaykh. This questioner says: In our country, they build a structure above the ground in the shape of a hollow grave. He says: In our country, they build a structure above the ground in the shape of a hollow grave, then they place the deceased on the ground inside it, then they close the door on him, and then after a period of time they open it to bury another person next to him. The one who buries comes and takes the bones of the first deceased and places them in the qiblah direction of the grave, then places the new deceased on the right side in the other part of the grave on the ground. What is the ruling on that, and what is the ruling on burial in these graveyards?

Answer:
In case of necessity, there is nothing wrong with it. In case of necessity, if no graveyards are found in the desert or in places where the town and land are narrow in large cities, there is nothing wrong with that. Likewise, there is nothing wrong with making a chamber and placing the deceased on the ground if digging in the ground is not possible, if digging in the ground is not feasible. All of this is fine, if Allah wills.
Likewise, if the bones of the first deceased are moved slightly and the new deceased is placed in his spot, there is nothing wrong with that either, because there is no harm to the first deceased. What is prohibited is taking the bones of the deceased and exposing them and scattering them in the open or in another place. This is not permissible.