(Plado et al. assume the impact was Phanerozoic, but give no evidence to support this.

[1]) The otherwise shallow lake (depth <10 m) has a 41 m central deep or trench at the crater site.

The location is also occupied by a significant, circular electromagnetic anomaly (with more conductive materials at the site).

[3] The anomaly is supposedly the result of a 100 to 200 m thick subsurface lens, presumably formed of fractured rock with saline liquids.

[2][3] The impact origin was inferred from the anomaly and the deep, and proven by identifying shatter cones and planar deformation features in glacial erratics adjacent to the crater.