It was as if rock had melted and flowed into place.

Its concentration of heat was so great that previously solid rock melted partially.

The rock of the wall melted like snow in the sun.

Then I saw rock melt and spatter dead ahead.

Extremely high temperature and pressure cause some rock to melt, which is commonly known as magma.

When a rock melts, the liquid is a primary melt.

Then hover till the rock melts and the water boils.

The fires of the earth have come to the surface there and the rocks melt in their heat.

In some places the rock had melted and flowed.

More than a decade later you could still see places where rock had melted.