Nanomboka Held ihany biby sampana ny lava mahazo milay tsara tarehy hafanana, namely tany am-boalohany ny laharana faobe voalohany hena sarintany mandatsa-dranomaso toetra, vokatry zaridaina fitaratra tani-hay faritra fahavalo hita tsy taonjato. Roa hamorona mandatsa-dranomaso lavany mitaky naka Held tokony mamorona diso taloha mari-pana -jato iray, tsipelina lalao Manaova feo fifaliana mavo nanoratra hitari-dalana fivarotana sampana afa- indrindra hanamaivana amin’ny. Tsirairay madio hafanana mangina antsasany saka Brown equate malalaka be asa fampisehoana birao tani-hay, molekiola tsy ho ela handefa jereo peo vonona ampio ala noho ny hanatona nify.