BTDT! But not in the Jeep. Good to hear there was no major damage & everyone was ok.
(For certain definitions of major damage, the bullbar and your wallet would probably disagree...)
I did it in my '78 Chrysler Gallant wagon. I was going up the coast road from Port Douglass to Cooktown via Bloomtown, at the time and the road was dead straight with god visibility and raised about half to a meter from the surrounding area. (So that it was still there during tropical storms.) But they had concrete channels across it ever so often to let water drain through from one side to the other... And I didn't see any sign for one until too late to slow down, and it was the same colour as the dirt road, of course...
Hit the dip having slowed from ~100 to something less, went in & out ok, but then when I came back down on the other side, the tyres sank into some dust & the sump landed on a big rock shaped like a square block in the middle of the road. Reshaped it nicely! It was far more aerodynamic after that.
But the car did sound like a diesel the rest of the way to Cooktown & back to Cairns. Pulled the sump of there, & bashed the sump baffle enough to get it out of the way of the crank counterweight that was clipping it. Then gave it an oil change & new filter. Still have the socket set I bought to do the job!