Looking for this map

Does anyone know where I can find those two maps of gm_construct and gm_flatgrass that had a secret button in the dark room and in an edge of the spawn respectively, that lead to secret bases bellow the map? Can’t find those anywhere and they were top notch! Thanks in advance!

I’ve never heard of maps like that but if you search garrysmod.org for “gm_construct” or “gm_flatgrass” you will surely find diffrent version of those maps, download them and try them out.