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Horn Mountain which lies on the North Side of the Grand River and runs from N.E. to N.W. in direction – this takes its rise some where about mountain Island in Slave Lake and Ends about a league before this when it Steers of again to a N.E. direction[.] Its shape is upon a Straight Line – & its height as well as that of the Rocky Mountain is unknown[.] The Latter is so high that it is sometimes invisible to the Sight for several days, it being involved in almost perpetual darkness – by the Clouds which daily Dash & Brake against its Summit – The Composition of which is nothing but Rocks – from which no doubt It derives its Name[.] The other is composed of a marshy Soil and derives its Name from the Numbers of Carribou Horns found upon it[.] Besides these mountains there are an infinite number of inferior ones which lie confusedly here & there without forming a connection to the above mentioned or among themselves[.]

Caves &^c &^c}

I was informed that Caves were found in the Rocky Mountain, But no particular account can be got of either their extent or Nature[.] The Indians dread to approach them near enough to make any observations – Keeps them Silent on this Subject[.]

Volcanoes}

As to volcanoes – there are some along the North Side of the Grand River and is visible from the River – it is as little distance this Side of the Bear Lake River – from this issue Several Smokes from which have a Strong Smell of Coal & Sulphur[.] I was told Per M^r John Thoms as who had Personally inspected them, that the fire was not

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