Moria, or Khazad-dûm, was founded by Durin the Deathless.

Apr 6, 2018 - Moria, or Khazad-dûm, was founded by Durin the Deathless. Durin awoke at Mount Gundabad, in the Misty Mountains, in the period of time known as the Years of the Trees, and came upon a shimmering lake beneath the mountain Celebdil with a crown of stars reflected in its waters. He named it Kheled-zaram as it was known in Dwarvish tongue, the Mirrormere. Thereafter it remained a revered place amongst the Dwarves. In the caves above the lake, Durin's folk built Moria.

The History of Moria (Khazad-dûm)

Moria, Wiki

Khazad-dûm Line of Durin

Mirrormere - Tolkien Gateway

Durin the deathless, Wiki

Durin the Deathless by FrerinHagsolb on DeviantArt

The Dwarves Of Khazad-Dûm In 'Rings of Power,' Explained

Gandalf in Moria, or Khazad-dûm, founded by Durin the Deathless. Señor de los anillos tatuaje, El señor de los anillos, Tierra media

Durin the Deathless, The New Notion Club Archives

How big was Khazad-dûm (Moria) compared to other dwarven cities of its time? - Quora

Did Moria even exist yet at the time the Balrog hid underneath those vast caverns? - Quora