The mountain is far more formidable when you see the people (black dots) for perspective.
We are so small comparing with great work of Pacha Mamma!
What triangle does the title refer to?
actually your right, i was reffering to the triangle du tacul, but its more to the right, out of view, what you see is the east face of the tacul. (which also has a triangular shape from that angle..)
The Triangle du Tacul is behind the shoulder that is at the far right in your picture. You can't see it from where you took this (nice) picture. What you see is the set of spires known as the Satellites (of Mont Blanc du Tacul). Perhaps you can edit the title of your picure?