[問題] 幾個台鐵隧道問題
1.台鐵有好幾個隧道是原先兩個隧道合併成一個
通常是為了防止落石而"加蓋"
那有人知道"加蓋點"在哪邊嗎？或是有人會去特地參訪"加蓋點"嗎？
像是自強一二號隧道 山里三四號隧道
2.山佳隧道興建的目的是？根本也沒靠山
難道是避免落石？但是山佳隧道的前後也是臨山就沒這個疑慮嗎？
3.南港出地下化之前，會突然有一段似乎是有透光的地方
查南港地下化其實有分地下化和山岳隧道兩段，只是平時似乎都被當成地下化的一部分
而南港往汐科方向，出地下化隧道之前的"透光點"，有人知道是在哪裡嗎？
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