Thanks, but I'm still skeptical. The first article, in an Indian news site (and reproduced in several similar sites) is about some stones that a group of amate

Thanks, but I'm still skeptical. The first article, in an Indian news site (and reproduced in several similar sites) is about some stones that a group of amateur archeologists found. It doesn't appear to have been published in any professional journal, and the comments make it clear that these are unlike anything seen elsewhere, and their purpose is unknown. My guess: they're not tools, they're random rocks. The other article, as you point out, shows a greater variety of the alleged tools from Chiquihuite. I'm no archaeologist, but to me they look like rocks that were carefully chosen out of a bunch of randomly shaped rocks. The picture of the cave entrance show that it is full of breakdown (caver for "rocks that fell off the ceiling of the cave"), and I wouldn't be surprised to discover things that look sort of like blades or points in such a pile of rocks. So I'm afraid I'm still skeptical.