When ice forms in the cracks and crevices of the relatively young and friable rock formations of Bryce, it expands with terrific force and breaks the rock.
(it; expands; with terrific force; T:When ice forms in the cracks and crevices of the relatively young and friable rock formations of Bryce) (it; breaks; the rock; T:When ice forms in the cracks and crevices of the relatively young and friable rock formations of Bryce)
it it
expands breaks
with terrific force T:When ice forms in the cracks and crevices of the relatively young and friable rock formations of Bryce
the rock T:When ice forms in the cracks and crevices of the relatively young and friable rock formations of Bryce