<?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">trilithons</topic></authority><related type="broader"><topic>megalithic monuments</topic></related><variant type="other"><topic>trilithon</topic></variant><variant type="other"><topic>triliths</topic></variant> <note xml:lang="en"><![CDATA[ Refers to megalithic prehistoric structures comprising two monolithic upright stones topped by a monolithic lintel. For smaller structures formed by two or more large standing stones capped by monolithic horizontal slabs, use "megalithic chamber tombs." ]]></note></mads>