What was being mined in the second scene in jurassic park

Another Jurassic Park filming location my wife and I visited was Hopi Falls. This is the location of the Maledictions Amber Mine which is the second scene of the movie. This hike is on an unmarked trail but is documented in the Kauai Complete Guidebook (at most gift shops in Kauai)

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,

idk srry

explanation: