CNN sez the new dome in the crater of Mount St. Helens is challenging geologists’ nomenclatural abilities.
Other features on the mountain haven’t been such a challenge:
Surely we can do better than that. There’s a picture of the dome, the size of an aircraft carrier, on the CNN page for your visual inspiration.
How about “There’s No Place Like Dome”? Or “Dome It All”?
Dome On The Range, duh.
I have three volcanoes. Two volcanoes are active and the other is extinct. But one never knows.
Currently, Fetus Head Dome might work but given it’s past history Champagne Cork Dome might be more indicative of future potential.
I think I love you. 
All your dome are belong to us?
Dome-o Arigato
I’m kinda partial to “pimple of doom”, myself.
How about selling the naming rights? Marketing weenies at deep pocket corporations love that kind of stuff. An obvious, though boring, candidate would be the manufacturer of Lava[sup]TM[/sup] soap. Some others (and potential tag lines) could be:
*The Hoover Vac Dome - We definitely suck, we could blow.
*The Sinutab Dome - Pressure relief of geologic proportions.
*The Porn-R-Us Dome - Want hot, throbbing action? Just watch this money shot!
*The Atlanta Hawks Dome - See this? You’ll be ice skating here before we make the playoffs.
*The Old Navy Dome - no need for a tag line, they can build their crappy commercials around anything.
*The Enzyte Dome - To Bob, virgin sacrifice was just a myth until Enzyte gave him one of these.
Whaddaya think?
Ol’ Poptop?
Jiffy-Pop Dome
Dome of the Rock
Dome Sweet Dome
Yul Brynner?
Ike?
Super Happy Fun Ball!
“Graboids! That’s it, graboids!”
Personally, I’d go with Kyle or Steve. But that’s just me.
In defference to the dearly departed Kingdome, maybe the King Dome? Then, when it blows, it can blow Seattle to Kingdome Come.
“The Pustule” or “the Boil”.
The Temp.
Wormwood?
Chrome, Pome, or I really like Phone.
Pleasure or Thunder?