Malo Otayirako Zinyalala ndi malo obisalako kapena okumba omwe amalandila zinyalala zapakhomo ndi mitundu ina ya zinyalala zosawopsa, monga zinyalala zolimba zamalonda, matope osavulaza, ndi zinyalala zosawopsa za mafakitale.Monofilament woven geotextile ali ndi ntchito zapamwamba zosefera mu engineering ya zinyalala.