Surah Taha 20:107

لَّا تَرَىٰ فِيهَا عِوَجًا وَلَآ أَمْتًا

You will not see therein a depression or an elevation."

Translation: Saheeh International

Tafsir

wherein you will see neither crookedness neither slope nor any curving’ nor any rise.

Excerpt from Tafsir al-Jalalayn, commentary on 20:107, via Quran.com. The reader has the full commentary and 9 more tafsirs.