plotting – List contour plot with peaks

I have this table that i imported this way

data = Import["C:\nivel\data.dat", "Table"]
xy = data[[All, {1, 2, 3}]]

And i wanted to make a list contour plot of it but got stuck in this:

ListContourPlot[xy, PlotTheme -> "Web", ColorFunction -> "DarkRainbow", PlotRange -> All]

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This happens because over the red line the function values are much higher than the rest so i tried to get more definition in the blue part by using 2500 Contours, which apparently wasn´t the answer. I was trying to plot something like this:

enter image description here

I can´t find the way to show sort of information of the variations over the blue part which can be seen here, where the Plot Range wasn´t used but got that white line instead

enter image description here