John Rumm wrote:
EricP wrote:

Hire or borrow a chain saw and carve it away. Doesn't take that long
to do when the weather is nice. Surprising how much can be removed
with patience.

Or even one of those "angle grinder crossed with a chainsaw" carving
thingies from Axminster.

All the fun of a chainsaw, and even more insanely dangerous, when
dealing with stuff likely to have rocks in.