Editing Cenote (section)

===Types===
In 1936, a simple morphometry-based classification system for cenotes was presented.<ref name="Hall1936"/>
* '''''Cenotes-cántaro''''' (Jug or pit cenotes) are those with a surface connection narrower than the diameter of the water body;
* '''''Cenotes-cilíndricos''''' (Cylinder cenotes) are those with strictly vertical walls;
* '''''Cenotes-aguadas''''' (Basin cenotes) are those with shallow water basins; and
* '''''Grutas''''' (Cave cenotes) are those having a horizontal entrance with dry sections.

The classification scheme was based on morphometric observations above the water table, and therefore incompletely reflects the processes by which the cenotes formed and the inherent hydrogeochemical relationship with the underlying flooded cave networks, which were only discovered in the 1980s and later with the initiation of cave diving exploration.{{citation needed|date=February 2020}}