// cpt-city: xkcd/xkcd-bath (cpt)
//
// Randall Munroe's bathymetric scheme as used in XKCD episode
// 1040, Lakes and Oceans
//
// author: Randall Munroe
// copyright: Creative Commons Attribution-NonCommercial 2.5 Generic
// year: 2012
// url: https://phillips.shef.ac.uk/pub/cpt-city/xkcd
#declare xkcd_bath =
color_map {
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}