Yo bro,
refer to this thread below, i did my contribution inside too
http://sgsbf.social/showthread.php?t=34035
http://sgsbf.social/showthread.php?t=29164
recently found a few new places, very exciting for outdoors!!
if keen to know where, pls pte msg me.
cannot tell the whole world, wait all the people go peep at me. haha