Both the walls of the Wallula Gap and the Columbia River Gorge also show the rough-plucked surfaces characteristic of kolk-eroded rock.
bˈoʊθ ðə wˈɔːlz ʌvðə wˈɔljʊlə ɡˈæp ænd ðə kəlˈʌmbiə ɹˈɪvɚ ɡˈoːɹdʒ ˈɔːlsoʊ ʃˈoʊ ðə ɹˈʌfplˈʌkt sˈɜːfɪsᵻz kˌæɹɪktɚɹˈɪstɪk ʌv kˈɑːlkɪɹˈoʊdᵻd ɹˈɑːk.