\begin{tikzpicture}
  \node{\includegraphics{img/rover-hill-compact.png}};
  \draw[line width=2pt, ->] (-2, -1) -- (-2, -1.5) -- (2.2, -1.5) -- (2.2, 0);
  \node[opacity=0.35, scale=5] at (2.4, 0) {\includegraphics{img/rover.png}};
\end{tikzpicture}