We construct Peano curves γ:[0,∞)→R2\documentclass[12pt]{minimal}
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\begin{document}$$\gamma : [0,\infty ) \rightarrow \mathbb {R}^2$$\end{document} whose “footprints” γ([0,t])\documentclass[12pt]{minimal}
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\begin{document}$$\gamma ([0,t])$$\end{document}, t>0\documentclass[12pt]{minimal}
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\begin{document}$$t>0$$\end{document}, have C∞\documentclass[12pt]{minimal}
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\begin{document}$$C^\infty $$\end{document} boundaries and are tangent to a common continuous line field on the punctured plane R2\{γ(0)}\documentclass[12pt]{minimal}
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\begin{document}$$\mathbb {R}^2 {\backslash }\{\gamma (0)\}$$\end{document}. Moreover, these boundaries can be taken C∞\documentclass[12pt]{minimal}
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\begin{document}$$C^\infty $$\end{document}-close to any prescribed smooth family of nested smooth Jordan curves contracting to a point.