SculpturesonthemenhirsofthecoveredavenueofGavr’innis。
Therehasbeenagooddealofdiscussionabouttheorientationofmegalithicmonuments，andthetruthonthatpointonceascertained，somelightmightbethrownontheaimofthebuilders。Itisevident，however，thatthereneverwasanygeneralsystemoforientation。ThedolmensofMorbihan，itistrue，nearlyallfacetheeast，doubtlessinhomagetothesunrisinginitssplendor；butthisisnotthecaseinFinistere，andthedolmensofKervinionandKervardel，forinstance，aresetduenorthandsouth。LeavingBrittany，wearetoldbytheRev。W。LukisthatthepositionofthemegalithicmonumentsofEnglandvariesconsiderably：mostofthedolmensofBerry，Poitou，Aveyron，andtheislandofBornholm，facewest；andthoseofAlgeriaaresetsouthwest，andnortheast，sothatitisreallyimpossibletocometoanyfinalconclusion。
Someofthemegalithicmonumentsalreadynoticedhaveapeculiaritytowhichwemustreferhereonaccountofitsimportance。Oneofthesupports，innearlyeverycasethatwhichclosestheentrance，ispiercedwithacircularopening。Sometimes，however，theopeningisellipticalorsquare。
DolmenwithopeningIndia。
WemeetwithdolmensthusdistinguishedinIndiaFig。69，inSweden，inAlgeria，inFrance，andinPalestine，wheretheyareoftenassociatedwithsepulchralnicheshewnoutoftherockandalsopiercedwithanopeningcorrespondingwiththatoftheentrance。InAlemtejoSpain，squareopeningsoccur。WestofKarlebyinSweden，isasepulchralchamberabouttwenty-ninefeetlong，madeofslabssetupright，allthosefacingsouthbeingpiercedwithanearlycircularopening；andontheshoresoftheBlackSeadolmensmadeoffouruprightstonessurmountedbyaslab，have，ineverycase，oneoftheuprightspiercedwithanartificialopeningaboutsixinchesindiameter。Thesedolmensaresaidbythecountrypeopletohavebeensetupbyaraceofgiantswhobuiltthemassheltersforadwarfpeopleonwhomtheyhadcompassion。