Fishing, unblock and handprints.

1. The children 'fishing' with a stick, some string and a bent paperclip in the grandly named Brighton Lake. 

2. The chalybeate spring that fills the lake is clogged with mud and sticks. Showing Alec how satisfying it is to unblock a culvert so that the flow washes clouds of red mud down into the lake.

3. The red muddy handprints that Alec leaves on the stone wall.