The White Div's Darkness and Stone-Rain

From B4.3, Kay Kavus Ventures to Mazandaran. It illustrates B4.3.43–50:

B4.3.43
He rose like some vast mountain into view,His head stood level with the turning blue.
B4.3.44
Then night descended, thick with pitch and dread,As though all light from earth and sky had fled.
B4.3.45
The world became a sea, boundless and dark;No shore nor star remained for them to mark.
B4.3.46
A tent of smoke and pitch he spread in night,And blackened every eye and quenched the light.
B4.3.47
From heaven came stones and clods in deadly rain,And terror struck the hearts of Kavus’s train.
B4.3.48
Some fled toward Iran in wild retreat,Their hearts sore-wounded by the Shah’s defeat.
B4.3.49
At dawn destruction met each stricken eye;The Shah lay blind beneath the darkened sky.
B4.3.50
Two thirds of all the army lost their sight,And chiefs burned inward at the shameful blight.