The far south drain is next to be explored. Above is where it bends from north / south, to the right is Impulse Lane Park [12Mar26] and then north to where it joins the south drain [14Feb26], and to the left where it heads east [24Mar26].
Below is from the north looking south to the corner (showing where it might have been originally planned to head further south), bottom is looking south on the east / west section.

Did you notice the date error? 🙄 When the camera was turned on it had lost the date for the first time this year, and it was discovered that the camera is that old that it won’t select beyond 2025 in the menu although it has been displaying 2026!
Tomorrow onwards is fine as luckily it allows the date and month to be reset after it has been tricked into being set for 31Dec25 just before midnight then rolling into 2026, which was able to be done once home.