Once exploration was over and drilling had begun in other Alaska oil facilities , like the Alpine field west of Prudhoe Bay , the concept of '' roadless '' became more fungible as gravel roads were constructed within the sites .
Alaska /location/location/contains Prudhoe Bay
RB NN VBD IN CC NN VBD VBN IN JJ NNP NN NNS , IN DT JJ NN NN IN NNP NNP , DT NN IN '' NN '' VBD RBR JJ IN NN NNS VBD VBN IN DT NNS .
Alaska
LOCATION
Prudhoe Bay
LOCATION
/location/location/contains