From this blog, March 14, 2016:
« When Gale crater was first announced as MSL's destination, Richard Hoagland announced on C2C-AM that Sharp Mountain was obviously an artificial construct, and that everyone at JPL knew that. Even President Obama knew it. ..... When Curiosity finally reveals Sharp to be just a mountain, what will he say then? Why, NOTHING, of course. Glad you asked. »
Well, Curiosity has been on the lower slopes of Mt. Sharp for quite a while now and of course Hoagland has been silent on the topic.
Yesterday NASA/JPL/CNES released the largest photo-mosaic of Mt. Sharp yet created. The images were from the ChemCam's Remote Micro-Imager, and the mosaic was created by a team at the University of Nantes, France from 216 overlapping images. Stéphane Le Mouélic provided the detailed explanation in a Marsblog. Here's a screen capture of one part of the huge photo-mosaic, but it's really worth looking at the whole thing.