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We have been to Yellowstone a number of times. When you're heading towards the North entrance there is an overlook on one of the mountains that shows the entire caldera, and there is a display there showing the size of the area. When you have driven through it you can truly appreciate the considerable dimensions of it.

It is facinating to fish the rivers and see the many vents that are literally everywhere. It boggles my mind to think how massive this eruption will be when it finally occurs.

I'm not gonna lose any sleep over it though.

Exactly. It's happened before, will happen again, and sounds roughly equivalent to another Krakatoa explosion.

I wouldn't want to be within several hundred miles of it, when it blows. The recent 70-cm rise is disturbing, hinting at "sooner" rather than "later", from what I can recall of my vulcanolgy course (back in the early 1980's). But "Soon" in geologic terms can mean anywhere from 5 seconds from now to several thousand years from now. . . .