Modular river, each piece attaches to each other through the rocks that have pins, it is possible to form a very long river with forks and branches, it's ten pieces for water and rocks, eight shrubs, six rushes, three reeds and an openLOCK bridge , I separated the water from the rocks so it can be printed transparent ...
from my campaign on kickstarter Tree Village
printed with Ender 3 in white for rocks and transparent Pla for water, (there is also a water and rocks version in one piece)
The supports are almost absent, you have to leave the option generate supports "active" for some plants and for the openLOCK holes.
(Also included is a piece that passes under the mill of Tree village)