I've seen these two ponds twice, unintentionally.
once when I wasn't looking for anything (and saw them) and
once when I was looking for another pond (and saw them).
they are at the junction of Hwy 78 and the west end of Slaughterhouse Rd.
We drove a few miles out the road until we came to a series of Stay Out signs.
Apparently they don't want us visiting the ponds in there.