Fig. 6From: Geotechnical evaluation of gully erosion and landslides materials and their impact in Iguosa and its environs, southern Nigeriaa Landslide at the study location (photo by Aigbadon). b Lateral soil spread in the study area (photo by Aigbadon). c Soil debris in the study area (photo by Aigbadon). d Ajali Sands with thickness of about 2.5Â m marked blue in the study area (photo by Aigbadon). e Ajali sands (SB4) in the study area (photo by Aigbadon)Back to article page