How to gather 500 Everstones?

This is a quest in Level 8. For this you'll need to buy an Underwell Pit building for 12k coins in the shop.

Underwell Pit

From there you can make the standard ammo setup and feed it into a turret just like you would have done in level 7 when gathering 100 everstones, a guide to that is here:

https://www.appgamer.com/sandship-crafting-factory/how-to-obtain-100-yellow-everstones

Our setup for this quest to gather 50 Everstones is below:

Gather 500 Everstones