A 40-year-old woman, Perumayee, was killed after she fell into a well as the loose soil caved in near Elumalai in the district on Saturday.
However, another woman, Girija (23) was rescued by the police.
Police sources said that both the women had gone to wash the clothes in the well that did not have proper parapet wall. Following the landslide that took place at around 10 a.m., Perumayee fell into the well and soil covered her.
Tamil Nadu Fire and Rescue Service personnel pumped out the water and dug her body up in the evening.
The Elumalai police are investigating.