Released on January 10, 2002
On August 8, 1984 37 people from the villages surrounding Lake Monoun, Cameroon, Africa were found mysteriously dead. First reports pointed to man made terrorist activity but it soon became clear that this was a natural event; somehow or other the lake had exploded, releasing huge volumes of a poisonous, invisible gas.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 22.214.171.124.0