What We Built https://mosaicmagazine.com/picks/uncategorized/2014/04/what-we-built/

Could a recently discovered chisel dating to late Second Temple times have been dropped by a workman at the Western Wall?  

Read more on Times of Israel: http://www.timesofisrael.com/archaeologist-claims-to-find-chisel-used-to-build-western-wall/