A brand-new version of Spiffyskytrooper's Natural Landscape mod for Fallout 4 was released on March 12th (2020).
2K (1Gb file size) and 4K HD (4.8Gb file size) Texture Packs are available.
It aims to overhaul all of the game's landscapes, and is available now for download over on NexusMods.
According to its description, Natural Landscapes aims to stay true to vanilla, and replace/expand upon textures where there’s room for improvement.
With this mod, the textures won’t have exaggerated noise issues. The new textures also aim to feel “natural” while also maintaining a high quality appearance.
This mod also works with both DLCs.
Not only that, but it features some non-landscape textures like trash and debris.
To install the mod, you’ll have to drag its contents into your Fallout 4’s "Data" folder. Then, you can activate it via the mod manager of your choice.
To showcase some of these textures, Spiffyskytrooper has shared the following screenshots.