<?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">petroforms</topic></authority><related type="other"><topic>rock art</topic></related><related type="other"><topic>petroglyphs</topic></related><related type="broader"><topic>visual works by material or technique</topic></related><related type="broader"><topic>geoglyphs</topic></related><variant type="other"><topic>boulder mosaics</topic></variant><variant type="other"><topic>boulder outlines</topic></variant><variant type="other"><topic>petroform</topic></variant> <note xml:lang="en"><![CDATA[ Shapes or outlines laid out in large scale with rocks or boulders on bedrock or other outdoor surfaces, usually by ancient peoples. ]]></note></mads>