crevasses

"After the heavy rain, the river was flooding the nearby town. "

"The hikers carefully traversed the vast snowfield, its icy surface shimmering under the high-altitude sun. "

"The success of our bake sale depends on several variables, such as the weather and the number of people who attend. "

"The sudden power outage caused a discontinuity in the recording, leaving a gap in the middle. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"From this vantage point we can observe the behavior of the animals in their natural habitat."

"The family spread their picnic blanket on the grassy riverbank. "

"The new houses were built on what used to be valuable farmland. "

"He navigated the bomber to the Ruhr."

"The weather forecast predicted rain for tomorrow, so I will bring an umbrella. "

"The student accounted for her absence by explaining that she had been sick. "

"the performance of an undertaking or a duty"