survey E2Cave
centreline

input 1969_July_E2/SwalletE2_1.th
input 1969_July_E2/SwalletE2_21.th

equate 64@SwalletE2_1 68@SwalletE2_21
input 1970/Poulnagollum.th

equate 121@SwalletE2_21 121@Poulnagollum

endcentreline
endsurvey