The compound of many adverse factors and wrong doings has caused the landslide disaster, though basically avoidable, at the north part of Lincoln Community. Paired with test results, advanced investigation indicates that the disastrous landslide relates directly to some inadequate strength parameters and deficient assumptions for groundwater level. This article discusses the major causes of the calamitous landslide, hoping to evoke more retrospection and alertness in the engineering field. The authors endeavor to prevent similar wrong doings in the future. The remedy proposal stands for a personal view of the authors; however, it may also serve as a reverence measure and a discussion object for the public.