I asked the boys (no, not those boys, nor those, the SMMS boys) for some advice on climbing these lovely specimens. The consensus so far is to start at the bottom, although B is still thinking.
"Time has a different quality in a forest, a different kind of flow. Time moves in circles, and events are linked, even if it's not obvious that they are linked. Events in a forest occur with precision in the flow of tree time, like the motions of an endless dance." The Wild Trees, Richard Preston
It's a bit daunting, so I think I'll start with this one. And work my way up.