Usage patterns
〈場所〉に野原が広がるa field stretches out (in a place)
A wide field stretches out around the village.
野原を駆け回るto run around in a field
The children ran around and played in the field.
野原に咲くto bloom in a field
I picked flowers blooming in the field and made a bouquet.
一面の野原a field covered from end to end (with something)
Rape blossoms covered the whole field.