Simple Map with mask between 2 layers

[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_91":-5,"_50":16,"_92":-5,"_93":94,"_95":96},"routes/viz-public",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":16,"_18":16,"_19":-5,"_20":21,"_22":16,"_23":24,"_25":-5,"_26":-5,"_27":-5,"_28":16,"_29":30,"_31":-5,"_32":33},"vizInfo",{"_40":60,"_69":70,"_71":72,"_73":-7,"_74":43,"_75":41,"_76":-5,"_77":78,"_79":16,"_80":81,"_82":81,"_83":-7,"_84":-7,"_57":85,"_59":86,"_87":-5,"_88":56,"_89":90},"vizContent",{"_40":60,"_61":62},"ownerAccount",{"_40":41,"_42":43,"_44":45,"_46":39,"_47":-5,"_48":-7,"_49":-7,"_50":16,"_51":-7,"_52":39,"_53":54,"_55":56,"_57":58,"_59":58},"isOwner",false,"isAuthenticated","canCreatePrivate","commitId","similarVizzes",[],"embed","forksCount",0,"forkedFromViz","runtimeVersion","license","descriptionIsAiGenerated","sourceProvenance",{"_34":35,"_36":37,"_27":-5,"_38":39},"project","socialImageUrl","https://next.vizhub.com/assets/unfurl.webp","sourceType","gist","originalUrl","https://gist.github.com/ThomasG77/5bf03d9c2acaa4562fecb94aadfb04e4","author","ThomasG77","id","gist-user-thomasg77","accountType","user","email","","displayName","avatar","oauthProvider","oauthId","isAdmin","stripeCustomerId","handle","handleNormalized","thomasg77","lifecycleEmailsEnabled",true,"createdAt",1791690388506,"updatedAt","gist-5bf03d9c2acaa4562fecb94aadfb04e4","files",{"_63":64},"f1",{"_65":66,"_67":68},"name","index.html","text","\n\n \n \n \n \n Simple Map with mask between 2 layers\n \n \n \n \n \n \n

\n \n \n \n","slug","5bf03d9c2acaa4562fecb94aadfb04e4","title","Simple Map with mask between 2 layers","description","ownerType","ownerId","projectId","visibility","public","isTemplate","headCommitId","0ie0qJFE1USrIBB_ZKDaM","startCommitId","forkedFrom","forkedFromVisibility",1524949681000,1524949680000,"publishedAt","isPublished","draftStatus","published","userId","account","appOrigin","https://next.vizhub.com","googleAnalyticsId","G-5BVJNTEF9V"]