Stonehenge 181
Image by tjj

nigelswift wrote:
I remember standing by Silbury and being amazed by a massive low rumbling, which turned out to be people drumming inside WKLB. Stonehenge would be far less effective presumably because of the shape ...
Interesting that you mentioned WKLB Nigel. It was quite late last night when I posted the Stonehenge link so didn't elaborate but was thinking about the work on acoustics Steve Marshall did at WKLB and Avebury for his book "Exploring Avebury - The Essential Guide". His chapter (page 53) on the acoustics of WKLB is certainly worth re-reading particularly the bit on Bull Roarers.

Yes I've just been re-reading the Abstract
http://www.tandfonline.com/doi/full/10.1080/1751696X.2016.1142292

I didn't mention before but the drumming I heard was stunning, it was just like it was going through you. Steve mentions a resonance similar to blowing in a bottle and that's about how it sounded - much louder and more penetrating than you'd expect mere drums to be.

And that of course was hearing it from the side. How would it sound if you were standing up at The Sanctuary getting the full blast?!

Of course, he does mention the opposite, that the builders might have been scandalised by any sound in there.