There are a bunch of Valentines images on that page. They're quite difficult to miss; there's about thirty of them, and they all have big pink hearts on them.
They were uploaded in February 2017. They all have pictures of landscapes or animals, and extremely witty comments.
In addition, by implication, there are also at least a dozen other lovely landscape images which were uploaded after mid-February and before the mining images were posted.
Including the
first image you linked to in your OP, with remarkable irony. There seem to be a whole series of photos taken in August 2016 including that one and the other one you linked in your OP; they obviously weren't posted when taken (since
this was uploaded on December 15th, and is further down the chronological list). Since at least one of the August 2016 photos was obviously uploaded in mid-February or later, it's entirely possible that
both of the images you praised and many others besides were uploaded in that month.