Imagedata of an image section

How can I take the image data of the area around a max?

markers = MaxDetect[GaussianFilter[img, 10], Padding -> 1]; 
HighlightImage[img, markers, Method -> {"DiskMarkers", 5}]

enter image description here
enter image description here

I would like to take the image data of the shape it is within like:

enter image description here