Fig. 1: The Äspö HRL tunnel system and sampled boreholes. | Nature Communications

Fig. 1: The Äspö HRL tunnel system and sampled boreholes.

From: Terrigenous dissolved organic matter persists in the energy-limited deep groundwaters of the Fennoscandian Shield

Fig. 1: The Äspö HRL tunnel system and sampled boreholes.The alternative text for this image may have been generated using AI.

Location of the Äspö HRL in Kalmar County, Sweden, is shown in the schematic map; depth, location and water type of samples included in this study are indicated on the tunnel system reproduction. A portion of the tunnel (including boreholes SA1229A_1, KA2051A01_5, and KA3105A_03) extends below the Baltic Sea. Figure reprinted and modified from ref. 94 with permission from Elsevier.

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