Talk:Lunar Manipulation/@comment-110.54.179.226-20120513062827/@comment-4714517-20120513065822

It's all about gravity: oceans aren't the only thing affected by moon and tides aren't limited on water, Moon affects landmasses and earth has similar reaction as tides, it's just not that obvious.

So: moon pulls the earth and volcanoes are weak spots on the surface, active volcanoes tend to get more active same time as the tides are at peak.