Breve, ma suggestivo anello che congiunge l\u2019area di sosta attrezzata in localit\u00e0 \u201ccroce del masso\u201d con la cima del \u201cpoggio della Marruca\u201d.<\/p>\n
Si cammina sempre sulle rocce verdi, le ofioliti: il sentiero attraversa brevi tratti di pineta che, salendo, lasciano spazio alla macchia mediterranea . Il rilievo si caratterizza per la presenza di una flora peculiare, adattata alle difficili condizioni di sopravvivenza dei terreni serpentinosi, ricchi di metalli pesanti fitotossici e poveri di sostanze nutritive. Tra le specie presenti spicca la rara Stipa etrusca che, insieme ad altre, pi\u00f9 colorate, forma, in primavera, un vero e proprio giardino botanico.<\/p>\n
Dalla cima del colle (489 m.) un superbo panorama ci consente di osservare la celebre \u201cValle del Diavolo\u201d, area storica del primo sviluppo industriale geotermico e chimico e antico teatro di suggestioni dantesche, per i molti fenomeni idrotermali osservabili sin dall\u2019antichit\u00e0, come i famosi lagoni boraciferi.<\/p>\n
Il panorama spazia poi a est verso la Rocca Sillana e il senese, a Nord verso Volterra a l\u2019Appennino e a ovest verso l\u2019immensa foresta di Monterufoli.<\/p>\n","noDetails":false,"noInteraction":false,"taxonomy":{"webmapp_category":[36]},"accessibility":{"mobility":{"check":false,"description":""},"hearing":{"check":false,"description":""},"vision":{"check":false,"description":""},"cognitive":{"check":false,"description":""},"food":{"check":false,"description":""}},"locale":"it","source":"http:\/\/vdc.be.webmapp.it\/wp-json\/wp\/v2\/track\/1151","web":"http:\/\/vdc.be.webmapp.it\/track\/croce-del-masso-e-poggio-alla-marruca\/","color":"","from":"","to":"","ref":"","ascent":"","descent":"","distance":"795","duration:forward":"","duration:backward":"","cai_scale":"T","id_pois":[1150,1149,1146,1147],"related":{"poi":{"neighbors":["1147","1146","1148","1149","1150","1918","1927","1926","860","867"],"related":[1150,1149,1146,1147]}}},"geometry":{"type":"LineString","coordinates":[[10.878771292046,43.253285558894],[10.87912584655,43.253221353516],[10.879176724702,43.253210205585],[10.879210922867,43.253204002976],[10.879299268126,43.253183634952],[10.879337824881,43.253175839782],[10.879397252575,43.253162931651],[10.879469169304,43.253144491464],[10.879492387176,43.25314222835],[10.879537062719,43.253130828962],[10.879584085196,43.25312144123],[10.879628593102,43.25311364606],[10.879671592265,43.253104342148],[10.879695145413,43.25310241431],[10.879716519266,43.253103084862],[10.879739737138,43.253103001043],[10.879759853706,43.253105096519],[10.879780389369,43.253105599433],[10.879801847041,43.253104090691],[10.879820454866,43.253102917224],[10.879839230329,43.253100821748],[10.879882983863,43.253095541149],[10.879904190078,43.253093864769],[10.879923803732,43.253091517836],[10.879942663014,43.253088751808],[10.879964372143,43.253085901961],[10.879984823987,43.25308506377],[10.880002006888,43.253086404875],[10.880018016323,43.253088332713],[10.880033606663,43.253086991608],[10.880063278601,43.253088751808],[10.880100242794,43.253089087084],[10.880114911124,43.253090176731],[10.880132177845,43.253090344369],[10.88014726527,43.253094116226],[10.88016461581,43.253096630797],[10.880179619417,43.253097971901],[10.880198730156,43.253098726273],[10.880213817582,43.253100821748],[10.880237873644,43.253101073205],[10.88025807403,43.2531032525],[10.880277939141,43.253104425967],[10.880298558623,43.253105515614],[10.880317082629,43.253107275814],[10.880335606635,43.253109874204],[10.880352621898,43.25311280787],[10.880370223895,43.253115657717],[10.880385562778,43.25311800465],[10.88040266186,43.253121273592],[10.880416575819,43.253123704344],[10.880440212786,43.253129655495],[10.880461419001,43.253134852275],[10.880487989634,43.253134684637],[10.880506094545,43.253135355189],[10.880521349609,43.253135606647],[10.880535515025,43.253134936094],[10.880563426763,43.253139797598],[10.880576921627,43.253146838397],[10.880590081215,43.253155723214],[10.88060089387,43.253165027127],[10.880609359592,43.253173660487],[10.88061564602,43.253189334646],[10.880622602999,43.253200985491],[10.880641881377,43.253218503669],[10.88065193966,43.253227220848],[10.880666021258,43.253234177828],[10.880689658225,43.253255132586],[10.880698794499,43.253265609965],[10.880709020421,43.253275835887],[10.880718994886,43.25328681618],[10.880725951865,43.253296874464],[10.880739782006,43.253309195861],[10.880748331547,43.253320343792],[10.880755204707,43.253331491724],[10.880765179172,43.253341801465],[10.880776494741,43.253350686282],[10.880785463378,43.253359738737],[10.880796192214,43.253368875012],[10.880801975727,43.253378430381],[10.880808094516,43.253389075398],[10.880811950192,43.253399804235],[10.880816895515,43.253410113975],[10.880826283246,43.25342008844],[10.880833575502,43.253430314362],[10.880847489461,43.25345126912],[10.880857631564,43.253461075947],[10.880867857486,43.253470044583],[10.880885627121,43.253477336839],[10.880896607414,43.253485467285],[10.880913957953,43.253505500033],[10.880927536637,43.253525113687],[10.880932733417,43.253535842523],[10.880943546072,43.253553276882],[10.880958046764,43.253564089537],[10.880964752287,43.253580937162],[10.880968440324,43.253596024588],[10.880974391475,43.25361572206],[10.880995430052,43.253639778122],[10.881003560498,43.253650423139],[10.881012612954,43.253661822528],[10.881020575762,43.253672551364],[10.881028203294,43.253682944924],[10.881050080061,43.253713035956],[10.881059132516,43.253735918552],[10.881074890494,43.253756370395],[10.881086625159,43.253783276305],[10.881094839424,43.253792161122],[10.881106993183,43.253815043718],[10.881110262126,43.253826275468],[10.881113028154,43.25383733958],[10.881134904921,43.253865586594],[10.881143705919,43.253876818344],[10.881150411442,43.253886792809],[10.881153009832,43.253895593807],[10.88117823936,43.253928869963],[10.881188213825,43.253952087834],[10.881192404777,43.253973880783],[10.881196763366,43.253989219666],[10.881197517738,43.254016041756],[10.88120078668,43.254037583247],[10.881203133613,43.254056610167],[10.881191901863,43.254086198285],[10.881190057844,43.254099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