Best double live vinyl?

Many great live albums from the 1970’s. The reason for my selection is it infuses many genres of music to perfection!

Santana-Lotus(3Lp’s)

Since the OP wanted a 2Lp live recording I better follow the rules.

Renaissance-Live At Carnegie Hall

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)