There are a couple of reasons why a natural spring on Sara's farm may have stopped giving water, which could be related to a landslide:
Changes in underground hydrology: A landslide can alter the natural flow paths of groundwater. If the landslide caused significant changes in the subsurface, such as blocking or redirecting the flow of water, it could disrupt the source of the spring and lead to a decrease or cessation of water flow.
Damaged water source: A landslide can damage or block the underground cracks or fissures that act as conduits for water flow. If the landslide physically blocks or collapses these pathways, it can prevent water from reaching the spring, resulting in a loss of water supply.
In both cases, the occurrence of a landslide can disrupt the natural flow and distribution of groundwater, impacting the functioning of the spring. It is important to assess the specific geological and hydrological conditions on Sara's farm to determine the exact cause of the spring's water loss and its relationship to the landslide.