Northamptonshire's largest total since 1995 was no consolation after a shocking pitch and a dull draw left two County Championship teams frustrated.
Glamorgan elected to bat in Cardiff and put on 8-570 before declaring, with Australian Test allrounder Marnus Labuschagne contributing 121 runs.
He was called into action again through the second innings of the match as Northants piled on an astonishing 750 runs in 227.3 overs.
Labuschagne bowled a team-high 44 overs for a return of 3-122 and six maidens, as Glamorgan used 10 bowlers.
Nine bowled at least 15 overs, with the Australian-born opener Nick Selman the last to have a go.
He sent down 3.3 overs and took the final wicket:
Glamorgan batted out 18 overs before the draw was called, kicking off the post-match anger.
"It's not so much the flatness of the wicket, the ball didn't move in the air for either side," Glamorgan coach Matthew Maynard told the BBC.
"(The last hour) wasn't good. I've spoken to the ECB for years, if there's no possible (win or loss) result at tea on the final day that should be it because no one wants to see that kind of cricket."
227.3 | The 750 comes up as Sanderson edges behind and our first innings comes to an end...as tea is called on Day 4. ☕️— NCCC (@NorthantsCCC) April 14, 2019
We lead by 180, who fancies 10 wickets in the final session?
Northants captain Alex Wakeley, one of the few batsman to miss out in his side's monster innings – three players scored centuries, with two reaching 150 – could barely find any joy.
"It was a really poor cricket wicket, if you play consistently on that, you're not going to get good games," he said.
"However you see it, you can't enjoy games like that and it says it all when our batsmen are scoring runs and are still coming off frustrated."