Collocations for expanse - noun

broad, endless, great, huge, infinite, large, limitless, long, vast, wide
a vast expanse of sand

unbroken
barren, bleak, desolate, empty
a bleak expanse of concrete

flat
She stood looking out over the flat expanse of fields.

open
grassy, treeless
blue, green, grey/gray, white
the white expanses of the frozen north

shining
the desk's shining expanse of polished wood

expanse of