optional, single

—

This element indicates in short the "environment" of the dive. it is given inside the <site> section. Allowed keywords are: unknown, ocean-sea, lake-quarry, river-spring, cave-cavern, pool, hyperbaric-chamber, under-ice, other.

<site>

—

<site>

(see also <site>)

<!-- cave diving -->
<environment>cave-cavern</environment>