Apr 24, 2016, 12:49 PM
(This post was last modified: Apr 24, 2016, 12:50 PM by aecrouch2016.)
There are many good rock sets out there including the one nathan8848 mentioned. Here are the links to the sets I like to use:
Weber's Gazebo and Rocks, Weber's Boulder and Brush, Weber's Stone Creations Volume 1-3, Deep Caverns, Canyon Craze, Large and Medium Rocks  http://velvetskyemusic.com/RCT3_files/cso.html
Krypts Galaxy has a few different rock sets as well http://krypt.weebly.com/custom-scenery.html
Weber's Gazebo and Rocks, Weber's Boulder and Brush, Weber's Stone Creations Volume 1-3, Deep Caverns, Canyon Craze, Large and Medium Rocks  http://velvetskyemusic.com/RCT3_files/cso.html
Krypts Galaxy has a few different rock sets as well http://krypt.weebly.com/custom-scenery.html