What could cause this
Just wondering what could cause this to happen. The patio area was built over 7 years ago so settling doesn't make sense. We have not had any rain other than a quick shower in 2 weeks. We have lived here for almost 2 months and never seen this before. I was out there last night at about 11pm and it wasnt there so between 11pm and 7am this morning something pushed large amounts of dirt thru the cracks in the concrete squares. The square's are not lose at all. Thats my size 11 shoe to show the size..

[img]https://www.simviation.com/phpupload/uploads/1317908438.jpg[/img

[img]https://www.simviation.com/phpupload/uploads/1317908438.jpg[/img

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