What’s an intuitive way to reset drill down charts to their default state?

I'm building a drill-down chart flow that has two graphs that work together

On the left, the bar graph has a list of locations and their temperatures. On the right, there's a temperature timeline of the same locations. In order to isolate one location, when any bar is clicked, both graphs update showing only that location allowing the user to focus on analyzing that location.

I'm trying to come up with a way to reset both graphs to their original state. At the moment I do this with the 'reset' button on the right. This is disabled by default but is enabled when the user has isolated one location. Is this solution intuitive? Is there a better way I could achieve this?