\documentclass[12pt]{article}
\usepackage{pstricks}
\begin{document}

\pspicture(0,0)(12,12)
\psdots[dotscale=4](6,6)
\pscurve[linewidth=2pt](8,11)(9,9)(8,7)(6,6)
\pscurve[linewidth=2pt](9,3)(8,4)(7,5)(6,6)
\pscurve[linewidth=2pt](2,4)(3,5.5)(4,6)(5,6.2)(6,6)
\pscurve[linewidth=2pt](3,10)(4,9.8)(5,9)(6,6)

\psdots[dotscale=4,dotstyle=triangle,dotangle=180](9,9)
\psdots[dotscale=4,dotstyle=triangle,dotangle=0](8,7)
\psdots[dotscale=4,dotstyle=triangle,dotangle=40](8,4)
\psdots[dotscale=4,dotstyle=triangle,dotangle=40](7,5)
\psdots[dotscale=4,dotstyle=triangle,dotangle=55](3,5.5)
\psdots[dotscale=4,dotstyle=triangle,dotangle=35](5,6.2)
\psdots[dotscale=4,dotstyle=triangle,dotangle=0](4,9.8)
\psdots[dotscale=4,dotstyle=triangle,dotangle=-10](5,9)







\endpspicture

\end{document}

