<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">underground environments</topic></authority><related type="other"><topic>buried</topic></related><related type="broader"><topic>environments</topic></related><variant type="other"><topic>environments, underground</topic></variant><variant type="other"><topic>underground environment</topic></variant> <note xml:lang="en"><![CDATA[ Environments located below ground level, including those within structures. For the structures themselves, if intentionally built below ground level, use "underground structures." To describe objects that are or have been in the ground and covered with earth, use "buried." ]]></note></mads>