Cartographic Notes

           Basisforlatitude:meridianthroughObservatoryMountain.

           Baselineforaltitudedetermination:theGreatBled.

           PolarSink:500m.belowBledlevel.

           Carthag:about200km.northeastofArrakeen.

           CaveofBirds:inHabbanyaRidge.

           FuneralPlain:openerg.

           GreatBled:open,flatdesert,asopposedtotheerg-dunearea.Opendesertrunsfromabout60°northto70°south.Itismostlysandandrock,withoccasionaloutcroppingsofbasementcomplex.

           GreatFlat:anopendepressionofrockblendingintoerg.Itliesabout100m.abovetheBled.SomewhereintheFlatisthesaltpanwhichPardotKynes(fatherofLiet-Kynes)discovered.Therearerockoutcroppingsrisingto200m.fromSietchTabrsouthtotheindicatedsietchcommunities.

           HargPass:theShrineofLeto’sskulloverlooksthispass.

           OldGap:acrevasseintheArrakeenShieldWalldownto2240m.;blastedoutbyPaulMuad’Dib.

           PalmariesoftheSouth:donotappearonthismap.Theylieatabout40°southlatitude.

           RedChasm:1582m.belowBledlevel.

           RimwallWest:ahighscarp(4600m.)risingoutoftheArrakeenShieldWall.

           WindPass:cliff-walled,thisopensintothesinkvillages.

           Wormline:indicatingfarthestnorthpointswherewormshavebeenrecorded.(Moisture,notcold,isdeterminingfactor.)