I looked all over the web for my own rpg hive exploring needs... and didn't find anything I liked, so I made my own. And then I figured I'd give back to the community.
This is a seamless "hive" tileset— that is, it uses a seamless hexagon texture as the main base, with quite a few variations.
The asset pack also has a bonus animated overworld bee.
Isn't this little guy adorable?
You can get it here: https://crypticsky.itch.io/hive-tileset