ELFX Shadows is a popular mod for Skyrim that enhances the game’s lighting and shadow system. It specifically aims to improve the realism and depth of shadows cast by various light sources within the game. The mod does this by refining the shadows in darker areas, making them sharper and more defined while also adjusting the ambient lighting to give a more immersive, natural look to the environment. This effect contributes to an overall richer visual experience, particularly in darker regions of the game, such as caves or night-time settings.