Expedition Statistics

50 expeditions: 407 people, 783 caves, 1,164 wallets and 2,582 logbook entries.

Number of survey legs: 21211
Total length: 138.8 km adding up the total for each year.

These are uncorrected tape lengths which include pitches and duplicates but exclude splays or surface-surveys.

This only includes lengths surveyed by Expo survey trips (though not all have valid Expo-attendees as some survex files are administrative collections of *include statements). This no longer (since 30 June 2025) includes ARGE and other non-expo surveys.

YearSurvex
Survey
Blocks
Survex
Survey Legs
Survex
length(m)
1976 2 1 2
1977 4 3 70
1978 2 0 0
1979 0 0 0
1980 4 55 468
1981 1 59 304
1982 17 259 2,280
1983 20 449 4,079
1984 8 109 712
1985 10 280 2,000
1986 0 0 0
1987 12 94 570
1988 9 108 1,001
1989 27 421 3,410
1990 38 368 2,785
1991 32 454 2,803
1992 37 360 2,096
1993 18 192 1,326
1994 20 279 1,867
1995 21 249 2,264
1996 72 677 5,549
1997 39 348 2,399
1998 23 157 995
1999 85 585 4,320
2000 78 492 3,288
2001 59 497 2,741
2002 35 185 1,366
2003 62 481 2,672
2004 72 733 4,288
2005 73 693 4,076
2006 60 322 1,864
2007 118 1,116 7,316
2008 43 461 2,547
2009 43 511 2,912
2010 34 385 2,378
2011 60 802 5,473
2012 79 717 4,193
2013 44 494 3,330
2014 71 844 5,312
2015 95 1,173 6,776
2016 73 1,049 7,819
2017 72 873 6,160
2018 97 1,426 9,450
2019 29 244 1,706
2020 9 0 0
2021 13 0 0
2022 63 768 4,660
2023 77 914 4,223
2024 35 504 2,831
2025 3 20 95

One Survex Survey Block is one *begin/*end block of data in a survex file. Some files from other caving clubs may have a convention of using many more blocks per file than we do, e.g. if the file is exported from other software into survex format.