Can you escape the Donner Party?

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Across
  1. 3. Beware of this person, he eats human flesh
  2. 5. You need this to cook and keep warm
  3. 6. Oxen and cattle and people need this to live
Down
  1. 1. Build this to keep safe and dry
  2. 2. Don't cross the Sierra Nevada in this season
  3. 4. Avoid this, it's big, black and hairy with claws
  4. 5. Take this with you, you'll starve without t.