"If so, they probably were smothered under its thick covering."

It's best to start with a thick covering of relatively tall and bushy species, planted close together for effect.

Under the thick coverings Tom could make out her swollen figure.

In the evening, thick coverings of ice can form on car windscreens.

Even so, rain and sun had hardened a thick covering.

The Arctic fox can hear lemmings even under a thick covering of snow.

Each cell being closed, the whole nest is cemented over with a thick covering of clay.

Light, filtered green by the thick covering of leaves overhead, barely lit the forest floor.

The males have characteristically black palps due to a thick covering of hair.

How smooth yet cruel it looked in its thick covering of snow!