North edge along the dam of one of the pools of the Lotus Pond area.
April 27, 2006
April 26, 2008
April 25, 2009
April 28, 2010
April 26, 2011
April 22, 2012
April 28, 2013
May 8, 2014
April 23, 2015
April 23, 2016
April 23, 2017
April 29, 2018
April 26, 2019
April 26, 2020
April 25, 2021