Tombs of Mattathias and Sons

From 1 Maccabees 13:25–30: > Simon sent and recovered the bones of his brother Jonathan, and > ***buried him in Modein***, the town of his ancestors. > > All Israel kept solemn mourning for him and long bewailed him. > > Over the tomb of his father and brothers, Simon raised a monument high > enough to catch the eye, using dressed stone back and front. > > ***He erected seven pyramids facing each other***, for his father and mother and his four brothers, surrounding them with a structure consisting of tall columns surmounted by trophies of arms to their everlasting memory and, beside > the trophies of arms, ships sculpted on a scale to be seen by all who > sail the sea. > > > Such was the monument he constructed at Modein, and it is still there > today. Wikipedia provides an image of Tomb of Mattathias: But, it doesn't say anything about the authenticity of the tomb or seven pyramids. - Are these seven pyramids still there? - Are there any studies conducted regarding this?