Geoglyphs
2012-01-22
Last night I caught a few minutes of a programme on BBC4, called 'Unnatural Histories.'As so often seems to be the case, a short stroll from the mainstream channels uncovered rough diamonds.In the programme, an aerial shot showed us clearly visible patterns in the earth, patterns that were partly concealed at ground level by dense undergrowth. The narrator explained that we were looking at 'geoglyphs' in the Amazon rainforest. Geoglyphs are shapes that have been deliberately formed in the land by the hand of man.Like many pilots, I have come to love the way it is possible in the air…
