One hefty modpack which is a modernised version of the 1.7.10 Alterria pack
Install Alterria 1.20.1
Step 1
Installing a modpack using the Technic Launcher is easy. If you don't already have the launcher downloaded, visit our download page to get the latest version.
Step 2
Type in the modpack name (Alterria 1.20.1) or paste the following url into the search box.
Step 3
Finally, click Install at the bottom right of the launcher after you select Alterria 1.20.1 from the list on the left. The launcher will handle everything else!