In particular, users should note the following:

1) Data were gathered from sources at widely varying scales, and so the horizontal precision of the data is variable.
3) Not all features are mapped to uniform standards. For example, watercourses are mapped in many ice-free areas, but not on all. The absence of a feature in these data does NOT necessarily indicate the absence of a feature on the ground.
4) In any situation where safety of human life is at risk, the quality and reliability of the source data should be checked.
5) Users should note that the topography of Antarctica, especially the various ice masses, changes with time, and that these data may not represent the current status of features.

The text and the data provided via the World Wide Web are copyright. They may be reproduced for scientific research, educational or other non-commercial purposes without further permission from the copyright holder. However, the Scientific Committee on Antarctic Research (SCAR) must be acknowledged as the source in any derivative work. The data may not be reproduced, copied or distributed for commercial purposes without the express permission of the Scientific Committee on Antarctic Research.

ESRI, ArcGIS, ARC/INFO and ArcView are registered trademarks of Environmental Systems Research Institute, Inc., Redlands, CA, USA.

Acknowledgments
Without the generous contributions of data by several nations, compiling the KGIS data base would never have been possible. Organisations that contributed to the KGIS data are acknowledged on the 'Partners' page.