John C. Sorry to have not responded sooner. Those are not small holes. They are the shadows of many boulders, the kind of ejecta debris common at the base of crater rims.

The pumice stone analogy however has merit. Remember, this mountain and ridgeline was created when two bolides hit the ground side-by-side. The intersecting rim, of which this mountain is part, would have been well squeezed and heated in that impact.

Earth has more and higher mountains now than ever. The collision of India with Asia forming Himalaya and the Tibetan high plateau is one reason. Mountain formation captures CO2 from the atmosphere and we were going down to levels below 0.02% where forests could not exist, until human industry started recycling underground carbon.