What is the primary function of a grave liner?

The primary function of a grave liner is to provide protection for the earth load. Grave liners, which may also be referred to as burial vaults, serve as an outer container for the casket. Their main purpose is to support the weight of the soil above the burial site, ensuring that the grave does not collapse over time. This construction helps maintain the integrity of the grave, preventing settling and erosion while also facilitating maintenance of the cemetery site overall.

While grave liners can offer some level of casket protection, their primary role focuses on the stability and support of the earth around the burial site. They are designed to withstand the pressure of the soil and weather conditions, which is essential for the long-term preservation of the grave. Other options may reference potential aspects of a grave liner, but they do not encompass the liner's main objective as effectively as the chosen answer.