*BEGIN 0718_cave ;Created from Survey file on Sun,09 May 1999.19:31:52 ;Dates surveyed : 930810 ;Surveyors : ND Grov ;No of stations : 20 ;Plan length : 68.1920355m ;Traverse length: 72.29m ;*FIX 0 451660 4799930 0175 ;*FIX 0 451662 4799940 174;22/3/08 ;*FIX 0 451560 4799731 174; --- *FIX coordinates (usually entrances) changed to ETRS89 datum by applying x-102 and y-209 --- March 2014 *FIX 0 451560 4799731 173 ;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ;Altitude altered to agree with new digital maps, March 2014 ;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ *entrance 0 ; +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ; 11/12/13 - Add correcting magnetic declination line so centre ; line surveys are aligned to Eur 79 grid rather than True North. ; Old magdev appears to be 4.05 degrees but should have been 4.2 to ; align to True North. This value is reduced by 0.4 degrees below ; to align to Eur79 Grid North. (4.2-4.05-0.4) ; +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ *CALIBRATE DECLINATION -0.25 0 1 1.65 161.95 -14 ;* 1 2 4.00 62.95 -11 ;* 2 3 4.55 127.95 -8 ;* 3 4 3.53 52.45 -20 ;obvious sandstone bed 4 5 1.70 331.95 -14 ;* 5 6 8.78 85.45 -9 ;sandstone slabs 6 7 2.68 117.95 29 ;over top of block 7 8 1.82 111.95 12 ;* 8 9 3.13 - -V ;scramble down 9 10 3.58 261.95 0 ;* 9 11 2.48 94.95 7 ;* 11 12 7.67 79.45 -3 ;rock flake 12 13 9.20 96.95 -1 ;* 13 14 5.22 92.95 -3 ;* 14 15 6.00 44.95 0 ;* 15 16 6.30 137.95 0 ;sumps ;*INCLUDE 0718-15-01; resurvey *END 0718_cave