Landslide geomorphology evaluation and geology structure analysis at Riau-West Sumatra highway in km 89-94Catur Cahyaningsih, Tiggi Choanji, Yuniarti Yuskar, Dewandra Bagus Eka Putra, Fauzi Rahman and Puja Fransismik CrensonniMATEC Web Conf., 276 (2019) 05011DOI: https://doi.org/10.1051/matecconf/201927605011