Mean-lifetime measurements within the superdeformed second minimum in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>132</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>

A rotational band has been studied in $^{132}\mathrm{Ce}$ to a spin above 50\ensuremath{\Elzxh}. Lifetime measurements have resulted in a large quadrupole moment corresponding to a deformation \ensuremath{\beta}\ensuremath{\sim}0.5. This is consistent with the moment of inertia determined from the energy-level spacing. These data are the first measurements of collectivity of discrete lines at high spin within the superdeformed second minimum.