How do I return the Terrain tab to the Main Tool Bar?

The “Terrain” tab seems to have disappeared from my Main Tool Bar. Sometimes a tab labeled “Tools” takes its place, but there is no menu at all to add or do much of anything with the terrain. Any ideas on how I can either reset Unity to bring it back or some other trick?

Much Appreciated!

There isn’t any terrain menu anymore. Use the terrain settings panel in the terrain toolbar instead.

In the Terrain Inspector (along with the options to raise/lower, etc.), there is a settings page, which includes options for the terrain resolution/height and more.