Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
As we wade and swim through the underground maze, renowned Mexican hydrologist Guillermo D. Christy points out the karstic topography, which is where erosion of the limestone has carved out the rivers and caves.
Source: https://www.bbc.co.uk/news/world-latin-america-67638183?at_medium=RSS&at_campaign=KARANGA