We weren't able to hike very far up Le Morne when we visited because it had been raining and we were told that hiking it when it was so muddy was not advised. So we contented ourselves with just walking up the flanks of it a little ways, and driving around it to admire the views.

We also saw the Slave Monument, though the gate was closed when we were there.

OK, it's a nice small mountain, nice to look at, with a pretty view and some slave history.  Otherwise, it isn't so remarkable and I don't really see much OUV.