Strange things. Arabic word written in sand?

I got this photo from people who live around the Sagamu area of Ogun state, who said that what you see above happened after a heavy downpour and thunder strike in the area. People surrounded the sand and almost turned it to a shrine.

I looked at the photo, looked at it, looked at it oooooo and I didn't see anything, so I asked them what was strange about it and they said what you see written in the sand is an Arabic word meaning Allah is Great. All our Muslim brothers and sisters, is that really what's written there? Another photo when you continue...