Thick/thin on the ground
Definition 1 of 1
Pro Tip 1/3Usage Frequency
The phrase isn't commonly used in everyday English, but it's useful for descriptive writing or speeches. 
During the festival, food stalls were thick on the ground.
Pro Tip 2/3Visual Imagery
The phrase creates a visual image of abundance or scarcity, like a blanket of leaves that's thick or thin. 
After the sale, deals were thin on the ground.
Pro Tip 3/3Variation in Use
The phrase can describe physical presence or the availability of non-physical things like chances. 
At the carnival, entertainers were thick on the ground.