The article "A Gravity Study of the Kilbourne Hole Area, New Mexico" investigates the geological formation of Kilbourne Hole and Hunts Hole, two crater-like structures in New Mexico. The author, Harold S. Slusher, uses gravity measurements to determine whether these structures were formed by explosions caused by subterranean basaltic intrusions or by the collapse of existing formations. Two competing hypotheses for Kilbourne Hole's formation are presented:1) Volcanic activity heated subterranean water, causing an explosion that created the hole. 2) The hole is a result of weathered rock collapsing, into which basalt later flowed. Slusher conducted a gravity survey of the area, measuring gravity at various points and calculating the Bouguer anomaly to identify variations in rock density. The lack of gravity highs over the holes suggests the absence of dense igneous plugs beneath them, favoring the collapse hypothesis. However, Slusher acknowledges that the current gravity data is insufficient to draw definitive conclusions. He proposes further research with additional gravity stations to create a more detailed Bouguer contour gravity map, which could provide a more complete understanding of the subsurface structure and confirm the cause of the Kilbourne Hole formation.