Yet, even though the wildebeest migration takes place largely within the protected borders of wildlife sanctuaries, thousands of the animals are illegally trapped and killed by poachers.

尽管牛羚大迁移绝大部分是在野生动物保护区内行进，然而成千上万的动物仍然遭到偷猎者非法的捕杀。

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Tanzania has adjusted its plans and the road through the park will now be unpaved, with game rangers controlling traffic with gates in a bid to avoid disturbing the annual migration of wildebeest.

坦桑尼亚已经调整了计划，穿越公园的公路将不会铺设柏油，同时公园管理者们会通过大门来控制交通以避免打扰角马的年度迁徙。

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A crocodile eats a young injured wildebeest during the great migration in the Mara River in Kenya which is infested with crocodiles lying in wait to kill.

角马跨越肯尼亚马拉河进行大迁徙时，河中会有许多鳄鱼出没，伺机而动。图中，一只鳄鱼吃掉了队伍中一只受伤的年幼角马。

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Writing in the journal Nature, the 27 scientists said the road would curtail wildebeest migration, with knock-on effects on the area's ecosystem.

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Mwanga Moto in the Serengeti is mobile, moving several times a year to follow the wildebeest migration, while Palahala in the virtually untouristed, hipporich Katavi National Park in western Tanzania is permanent but low impact.

FORBES: Escapes

For seven hours every Sunday, the city closes more than 100km of roads to motor vehicles, and a wildebeest-worthy migration of bikes and pedestrians takes over the city.

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