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4. {\sl Valle de Vallibierna}\par
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{\bf IBONES DE VALLIBIERNA (LITTLE LAKES OF VALLIBIERNA)}\l
1 h. 30 min. (to the top)\vskip 1cm

Same route as in {\sl Ib\'on de Llos\'as}.
Once in the {\sl Plleta de Llos\'as}, follow the red and white marks.
After approx. 46 minutes, cross the {\sl Vallibierna} ravine. Follow it
on its right side and after 1 hour you will get to the lower end of the
{\sl Ib\'on de Vallibierna} (2,440 m. high). Circumvent it on its left
bank.
15 minutes later you will get to the {\sl Ib\'on alto} (upper little
lake), which has another small {\sl ib\'on} next to it.

If you feel like it, you can climb the left slope of the {\sl ib\'on} to
the hill that separates the {\sl ibones} of {\sl Vallibierna} and
{\sl Llos\'as}. You will need another half hour to go up to the
hill (2,670 m. high) and then you can go down again by following the
route of the {\sl Ib\'on de Llos\'as}.

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