::: {.cell hash='08_Maps_cache/revealjs/lakes-rivers-1_e5fbdda95d695984afd819ee09624d96'}

```{.r .cell-code}
ggplot() +
  geom_sf(data=summarise(italy)) +
  geom_sf(data=italian_rivers,
          color="blue",
          fill="cyan") 
```
:::