PENEPLANE

"The geologist observed a peneplane in the area, indicating that it had once been a flat plain but had undergone significant erosion."

"The formation of a peneplane usually takes millions of years of weathering and erosion."

"The peneplane in this region is characterized by its gently sloping surfaces."

"The ancient peneplane stretches across several states, showcasing the effects of long-term erosion."

"The study of peneplanes provides crucial insights into the geological history of a region."