She peered into the bottomless well and felt a chill at the thought of its depth.

Staring into the well's bottomlessness, she felt both fear and wonder.

At the conference, poets and scientists alike spoke about the bottomlessnesses of grief, wonder, and the cosmos, searching for words to contain what could not be measured.

The explorers carefully mapped the cavern's bottomless pits before the storm sealed the entrance.

At midnight we stood at the edge of the bottomless pit, feeling the cold draft that came from its depths.

The old well seemed bottomlessly dark, swallowing any light that dared to enter.