
Im so clever(pat ,pat pat)
Ihooked up a hose to the end and ran it to the sump pump,Then I kept stepping on the hose . Worked kind of like a plunger and it freed up all the gunk.
Then I used my shop vac to clean out the sump hole.
No sense in trying to un-gunk that too.
Self praise is no recommendation!!!
InspectorD