Look at the map and do a experiment
Take a bottle of the goop of your choosing and squirt it out on a slight incline, then go back and assess the results, the head of the formation (Spearmint's holding) will be deep and narrow and the formation will become shallow as it spreads wider; this is glacial geography. IMO (check out the graphic below) https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Forders.newsfilecorp.com%2Ffiles%2F4360%2F72808_839822e284f79ab1_002full.jpg&data=04%7C01%7C%7Cdb17a38e9ca04efe990d08d8c1d09920%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637472448948126222%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=CrNijctp7p725z6VUiYx5B4LHKF8gTmF5wGHBs5WVQ8%3D&reserved=0