[Rockhounds] Neanderthals built cave structures

[Paul]

Callaway, E., 2016. Neanderthals built cave structures
—and no one knows why. Nature News.
https://www.nature.com/news/neanderthals-built-cave-structures-and-no-one-knows-why-1.19975

Jaubert, J., Verheyden, S., Genty, D., Soulier, M.,
Cheng, H., Blamart, D., Burlet, C., Camus, H.,
Delaby, S., Deldicque, D. and Edwards, R.L.,
2016. Early Neanderthal constructions deep in
Bruniquel Cave in southwestern France.
Nature, 534(7605), pp.111-114.
PDF file:
https://static1.squarespace.com/static/5728dfa81bbee0da7943b811/t/594bd8539f745612a7f9929a/1498142804382/Early+Neanderthal+constructions+deep+in+Bruniquel+Cave+in+southwestern+France+%3A+Nature+%3A+Nature+Research.pdf
Abstract: https://www.nature.com/articles/nature18291

Speleothems as Chronological Markers, Bruniquel Cave
PDF file link: 
https://www.researchgate.net/publication/332241194_Memorie_dell'Istituto_Italiano_di_Speleologia_S_2_XXXIII

PDF files of related papers
https://www.researchgate.net/profile/Jacques-Jaubert

Yours,

Paul H.