There is another tree on the Mangles river, this time in the Upper section, above the
bridge used as a getout. The tree is/was a very tall poplar and covers 3/4 of the river,
and is just above the island on the LHS (the one you can circumnavigate), just after a
long flat section.
If it doesn't rain much in the next couple of weeks, i'll grab my chainsaw and head down