Old Mac: What are these strange..?

[Brett_Morrissy]

On our recent trip to Old Macdonald, after teeing off to the magnificent 5th hole - "Short" - I noticed these strange turf patterns, at first I thought perhaps it was drainage lines, or leaking irrigation lines and I am sure it is something very simple, but can someone tell me what it is?

Two images below, first is a wider view of the position, in the broken ground short of the green complex, and the second is a closer view, note the arcs.

Thanks
Brett

[Sean Remington (SBR)]

    Looks like the taller grass is following a drain line.  Either slightly better soil conditions over the line or the roots have found some moisture.   Looks like a great little hole with such a huge green.

[Anthony Gray]

  Those are crop circles that appear at night.It adds a British feel.

  Anthony

[Brett_Morrissy]

Anthony - I like the crop circles - that seems to make the most sense, Gold! 

[Tom_Doak]

Brett:

I've noticed the same thing, and I'm not positive as to the answer to your question.  I don't think there is much of any drainage in that area, so I suspect that it is just the tops of some irrigation trenches which accidentally got backfilled with a heavier soil mix than everything else.  There was a bit of heavier soil in that corner of the course.  But, Jim Urbina may come on and tell us it's something else.

[Tony Weiler]

Moles?

[Martin Toal]

Ley lines?

http://en.wikipedia.org/wiki/Ley_line

[Tom Jefferson]

Those patterns are simply where the irrigation plow trenched through 'richer' sandy soil, and in so doing a better growing environment was created along those trench lines.

Tom  

[Brett_Morrissy]

thanks Tom for sorting that out. 

why would the trenching plow for the irrigation work in these curved lines? - that it why I thought it was unusual - becuase of the shape - it looks like long lengths of hose that drip and the grass is grwon up next to and around it.

[Ronald Montesano]

'cause if we kill all the golfers...

[Dan Herrmann]

That's where the Oregon Snipe lives.  Be careful in there!