african black-&-white black-coats black-skin Bray common-zebra equids erect-manes fast grant’s-zebra grazers greyscale harems herbivores herbivorous herd herds individual mammal mohawk-like-manes monochrome patterns plains-zebra social stiff-manes stripes ungulates unique white fur white-stripes zebra bark black coats black skin common zebra erect manes grant’s zebra gray grey mohawk-like manes patterned plains zebra stiff manes white stripes aligned alignment aligns cast-metal circle circular decorated decorative device dial distinctive flat-plate garden garden-object gnomon hour-lines inaccurate indicator lines local-solar-line nodus ornament ornamental point pointed shadow shadow-edge shadow-line style sundial sun’s-position time time-telling-device age ages ancient architecture bronze castro Celtiberian celtic cidás citania citanias cities cividades cliff culture defendable defensive elevation fort fortified hill hill-fort hillfort hilltop house houses iron maritime ocean oval peninsula place refuge rock rocks saavem sea security settlement wall walls water active activities appropriate-behavior appropriate-behaviour beams children children’s-playground communicating communication equipment fun green greenery informing kids leisure light limitations limited limits park parks play playground playing rules safety sand sandpit shade shaded shadows shady sign suburban sunlight sunshine trees warning weathered white agile animal arboreal climber color colored colorful colors colour coloured colourful colours dendrolagus-goodfellowi-buergersi endangered Goodfellow’s-tree-kangaroo highly-threatened joey jumping-ability macropodidae Marsupial mother omnivore omnivorous ornate-tree-kangaroo overhunted Papua-New-Guinea pouch rainforest-habitat rare tree-climber young youngster