GPR and Magnetic Techniques to Locate Ancient Mining Galleries (Linares, Southeast Spain)

Figure 3

Recent sinkholes in the Linares mining district, close to the urban area. In the photograph, an inverted cone morphology of more than 15 m in diameter and about 30 m deep (a); GPR study in sector (b); magnetic study in sector (c); remains of foundry slag observed in the grid studied (d).

(a)

(b)

(c)

(d)