This answer is just how I interpret it, the rest is - of course - up to you. The figurative meanings I can't quite guess, but I'll give you what I can make out.
Word 1: Promontory
Word 2: Diminishes
Promontory, Meaning: <em>Promontory </em>means a high piece of land such as a cliff or overhang on a mountain.
Diminishes, Meaning: <em>Diminishes </em>means to slowly fade away and vanish. His figurative meaning using <em>diminishes </em>here: '...Diminishes me, because I am involved in Mankind;...'. 'Diminishes me...' Means he's fading away metaphorically, not physically.
Answer
That seems like a really annoying issue you have there. I think you should get your local municipality's contacts and maybe send them an email, or give them a phone call. They will appreciate your concern and will certainly do something about the issue. The environment will thank you as well! Thank you for being such a caring person for the environment. You should definitely get in touch with your local municipality to highlight the problem.
Answer:
The rhythm of stressed and unsressed beats.