Rear sunroof drains on 2007 XC 70...are they accessible at all?

[AylmerQc]

Two years ago I took out the seats and all carpeting so as to dry the very wet sponge carpet-underlay on my XC70.
At the time I thought it was from snow melt off winter boots but I read about the clogged sunroof drain later on so then cleaned out the front ones.
Yesterday I'm working on removing the parking brake cable and lifting the carpet I find it's all wet again.
The "flooding" may have happened between the 12 months from when I first dried out the car to the time I cleaned out the sunroof drains but I'm going to see If I can find or access the rear drains.
Any advice? I haven't found much online about them. Most videos just show the front ones being unclogged...

[jonesg]

maybe you can find the outlet tubes under the car.

[cn90]

If you have some wood ramps, drive the front wheels up so the nose is up.

Open sunroof and slowly pour one cup of water at a time.

Water should flow to the rear drain tubes...