Smiths Fire Iskandar's Wall

From D5.30, Iskandar Builds a Wall against Yajuj and Majuj. It illustrates D5.30.44–50:

D5.30.44
They mixed much oil and naphtha, then they pouredThe mixture on the substances there stored.
D5.30.45
They heaped great loads of charcoal on the height,Then, at his order, set the mass alight.
D5.30.46
A hundred thousand smiths obeyed his will,And brought their bellows, working with their skill.
D5.30.47
The roaring blast rose from the mountain’s peak;The stars before the fire’s fierce might grew weak.
D5.30.48
So time went by amid that fiery glare,The bellows’ blast, the smiths’ relentless care.
D5.30.49
The substances grew molten, flowing bright,And fused together in the fire’s fierce light.
D5.30.50
Thus Yajuj and Majuj were held at bay,And nations breathed in safety from that day.