👉 Restoration and strengthening operations of Zangoleh Dome in Damghan, Iran 👉 Project aims to prevent erosion and destruction of the historical monument 👉 7th-century Zangoleh Dome dates back to the 7th century AH 👉 Removal of worn layers and repair work with homogeneous materials 👉 Application of new thatch coating to strengthen and insulate the dome