step and layered texture of rocks at the river bed

abstract ancient argillite art backdrop background bank bed broken carpathian carpathians clay close coarse color conglomerate crack cracks design drawing eco feature ferruginous flaky fossil fractured fragments gray hulled inclusions irregularities layer layered layering layers massive material mineral minerals mountain mountains mudstone old pattern petrified prut puff river rock rocks shore step stepped stone stones structure texture ukraine view wide widebackground yaremche