The equilibrium configuration of the vortex lattice for high-Tc superconductors has been of great interest since these materials were discovered. The high-Tc superconductors are strongly anisotropic compounds. The anisotropy introduces many interesting novelties in the properties of the vortex lattice, affecting its geometry and introducing strange and yet unexpected features as the angle u between the induction B ~the average vortex direction! and the crystal c axis is changed. A great deal of experimental and theoretical works 1‐4 have been dedicated to investigate the shape of the