Bruce, you may have visualized some plumb bobs ('schietlood' in Dutch) but to me it's the split of a water pipe leading to some water taps. They're blocked for some reasons. It will likely be a difficult task for a plumber to determine where the blockage is. The only solution is to cut the pipe.
Let us take the inconvenience for granted for a while. This gives us the opportunity to enjoy your render a little longer, Buddy!

I corrected the title spelling:):)

What a cool render this one turned out to be, bravo!!! tigs=^..^=