Called Explorer PACK which is free and its being added here for records, given are 4 free rocks and its details given below. 

4 high-quality photo-scanned boulders
Perfect for testing the quality and workflow
Includes both Blender and FBX formats
Blender Asset Browser Supported

Technical Details
High-quality photogrammetry scans
Optimized for real-time and rendered applications
Multiple poly count options for flexibility
Textures Included (Color & Normals)
Universal compatibility (Blender + FBX formats)

Perfect For:
Environment artists
Game developers
Visualization projects
Architecture visualization
VFX artists

Downloads: show love to dev by purchasing if you can afford it

IF THE LINKS ARENT WORKING, THEN PLEASE ACT LIKE A GROWN UP AND MESSAGE ME/ COMMENT HERE OR ON DISCORD AND I WILL UPDATE THESE LINKS QUICKLY! MAKE SURE YOU DOWNLOADING PROPER FILE WITH PROPER EXTENSION LIKE .ZIP OR .RAR

Official Discord : https://discord.gg/M2kqB4M9tG

Recommended link below => FULL SPEED.

USE IDM FOR FASTER DOWNLOAD.

https://www.file-upload.org/pmaa2k7zzf0h

make sure to use brave browser to download to avoid ads!

updated 4 dec 2024 link added!

MIRRORS:

for mega and g drive links – contact admin.