@megschwamb I imagine it's a pretty good logistical feat just to truck the concrete up there.
@1dalm Over Over 5,000 cubic meters of concrete had to be poured https://www.lsst.org/news/lsst-construction-%E2%80%93-above-ground-pach%C3%B3n
@megschwamb That volume of concrete is not that impressive.
That volume of concrete in that location is very impressive. Do you know if they had to procure a special mix for the altitude?
Whoops 2017 not 2015!