I think Gordon's method actually applies much better to saying that the many tombs and circles in, say, county Cork or the Scottish Recumbents could have been 'Family Monuments' rather than 'Community Monuments'.

i.e. that a small group could have transported the stones (which are quite big in most cases) easily and there was not a need for a whole village.

I can not believe myself that building something like Stonehenge was done by a few people.

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I also thought about this the other day. The people of Easter Island totally deforrested the island just to move and erect their statues. There aren't all that many really, but they are huge (there is an incomplete one in a quarry that is over 60foot long). They obviously had great skill at moving and erecting these. Surely they would have come up with the same method, too. If they did have such a 'wood-cheap' method, then why was the island deforrested?