Streamway

In the initial stage of this development there existed presumably a free run-off of meltwaters within the present-day ice-marginal streamway towards the west, and then towards the north. The active margin of the icesheet stayed at that time ...

A large tube is then followed over several silt banks to surface after a total dive of 200 m in a large passage containing an active streamway – The San Agustin Way. 5 m before the passage surfaces another line junction is passed, ...