Best double live vinyl?

A lot of people are mentioning Little Feat’s ‘Waiting For Columbus’. I will agree that the recording is pretty good for when it was recorded but I saw Jean Luc Ponty at the Lisner Auditorium and that hall has the worse acoustics of any hall I’ve been in.

It’s an engineering marvel that anything could be recorded at Lisner Auditorium given how the sound bounces around like it’s in a pin ball machine.

While not a double album, Lou Reed's "Rock and Roll Animal" and "Lou Reed Live" were recorded at the same show.    The intro to Sweet Jane on R&RA is still one my favorite guitar pieces.  

Ted Nugent double live gonzo.

As others have noted, UFO - Strangers in the Night and Allman Brothers - Live at Fillmore East.

I also think Thin Lizzy Live & Dangerous is an awesome live album.

As is Black Sabbath - The End (but that's 3 lps, not a double)

Curtis Mayfield Live, recorded in 1971 at the Bitter End in NYC: