Yeah that's probably what it is.@Judycat
Maybe it’s an old sidewalk. At our previous house we found a very long sidewalk under 2 inches of dirt and grass.![]()
@PeppermintPattyMost grass, not all, will go dormant during heat waves with lack of rain. It will probably start coming back at the end of this autumn. If not, for certain, next spring. The top soil will help once it starts growing in again.