Craig Rhos-y-felin Bullet Stones

The rhyolite boulder collected by R. S. Newall in 1924 from an excavation at Stonehenge which has been discussed before at length - https://www.sarsen.org/2023/07/the-erratic-that-came-in-from-cold.html - has an appealing "bullet" shape.

The pillars at Craig Rhos-y-felin, where the boulder has been petrographically matched to, tend to have these rounded tips and the excavations there revealed many such bullet shaped tips that have broken off. These boulders still at the quarry obviously haven't been transported anywhere and so the bullet shape of the boulder "is a tale... signifying nothing.” 

Photo by Adam Stanford - annotated by me

Photo by Mike Parker-Pearson with "Newall's Boulder" floated in by me. 

Photos of quarry from, and more information available at :

Craig Rhos-y-felin: a Welsh bluestone megalith quarry for Stonehenge 

Published online by Cambridge University Press: 07 December 2015 

Mike Parker Pearson , Richard Bevins , Rob Ixer , Joshua Pollard , Colin Richards , Kate Welham , Ben Chan , Kevan Edinborough , Derek Hamilton , Richard Macphail , Duncan Schlee , Jean-Luc Schwenninger , Ellen Simmons and Martin Smith