Considering that Olof Ohman discovered the stone when he was clearing trees for farming, it would be safe to assume that any farm-able land in the area has been cleared and plowed.

The text translates to:

"Eight Geats (Swedes) and twenty-two Norwegians on an exploration journey from Vinland to the west. We had camp by two skerries one day's journey north from this stone. We were [out] to fish one day. After we came home [we] found ten men red of blood and dead. AVM (Ave Virgen Maria) save [us] from evil."
"[We] have ten men by the sea to look after our ships, fourteen days' travel from this island. [In the] year 1362."

Presumably the "sea" was Hudson Bay.

"A possible route of such an expedition connecting Hudson Bay with Kensington would lead up either Nelson River or Hayes River,[37] through Lake Winnipeg, then up the Red River of the North.[38]) The northern waterway begins at Traverse Gap, on the other side of which is the source of the Minnesota River, flowing to join the great Mississippi River at Saint Paul/Minneapolis.[39] This route was examined by Flom (1910), who found that explorers and traders had come from Hudson Bay to Minnesota by this route decades before the area was officially settled.[40]"

If 10 men camped at the mouth of the Nelson or Hayes river for a month or more there is a slight possibility that there could be archeological evidence.

[en.wikipedia.org]

"The Stone Age did not end for lack of stone, and the Oil Age will end long before the world runs out of oil"

-- Sheikh Zaki Yamani